US2471425A - Device for controlling the release of high-pressure fluid mediums - Google Patents

Description

y 31, 1 4 H. c. GRANT, JR, ET AL 7 DEVICE FOR CONTROLLING THE RELEASE I 0F HIGH-PRESSURE FLUID MEDIUMS Filed Jan. 13, 1944 2 Sheets-Sheet l IQ'Q' L I ATTORN May 31, 1949. H. c. GRANT, JR., ET AL 2,471,425

DEVICE FOR CONTROLLING THE RELEASE OF HIGH-PRESSURE FLUID MEDIUMS 2 Sheets-Sheet 2 Filed Jan. 13, 1944 11v VENTOR5- y 6. Grant, Jr,

' TORNE Y Emmy 13 1 4 a. ww mw Patented May 31, 1949 DEVICE FGR CON TBOLLIN G THE RELEASE OF HIGH-PRESSURE FLUID MEDIUMS Harry C; Grant, Jr., New York, "N. Y, and Arthur Reichard, North Arlington, N. J assignors to Specialties. Development Corporation, Bloomfield, .N. J., a corporation-of New Jersey Application January 13, 1944, Serial No. 518,070

(Cl. i k-4'79) 19 Claims.

1 The present invention relates-to control devices; and more particularly 'to "a locally and" remotel-y operable de'vice or control head for controlling the release '"of a high pressure fluid medium.-

In systems for" releasingor dispensing a iiuid pressure medium such *as carbon dioxide stored in a container, which may beused for extinguishing-fires, inflating flotation devices and for-other purposes; it is-=customary=to provide the container with'avalve, a pun'cturable' disc or other suitablemeans for-releasing the medium from =tlie containenwhen desired, and actuating devices for efiectingoperation ofthe releasing means.

"The'present invention aims to provide an improved device-"Tor controllingthe initiation-and operation of actuating themeans whereby the release of the flu'id pressure medium "from a container iseffected.

An'object oithe-invention is to provide an i-- proved device 'for controlling the release of a fluid pressure medium and which is efficient and positive in operation, simple in construction-economical inmanufacture and durable in use.

Another object *of the' invention is to provide an improveddevice of the foregoing character which is adapted to be operated eitherlocallyor remotely.

Another object of the invention is to provide a-ncontrol head or device'wherein the locally and" remotely operable means can beoperated inde pendently without -eitherinterferingwith =or impairing rthe efficiency of the other.

Another object offithe invention is to provide a control head :or device which canbe properly assembled and installed :in a minimum length of time by unskilled workmen or =operators.

Another :object :of the invention "is to provide aroontrol head'or device which, after operation, can be propcrly reset in 'a convenient manner for successive operation:

Another object of the invention is to provide aacontrol' headsahaving "locally: and remotely operablesmeansrfor effecting actuation of the control headmechanism. in a manner 'to:release fluid pressure --mediumr from a" container and having unidirectional; aactuated :means associated there with,- whereby either-the locally or remotely operable .means may :be independently operated with respect to each other;

A further object of the invention-is to provide a devicesof: th'e foregoing described character wherein bothz' the locally and remotely operable means are provided: with manually I releasable latching means 'adaptedt'o discourage unauthor ize'd operation. thereof and with means for indicating when onepf the-operable means has been actuated.

A still further object of the invention resides in the construction, arrangement, and operation of the parts of the device, whereby the foregoing objects are accomplished.

Other and further objects o'fthe invention will be obvious upon an understanding of the illustrative embodimentabout to be described, or will beindicated in theappendedplaims, and various advantages not referred to hereinwill occur to one skilled in the'art upon employment of the invention in practice.

A preferred embodiment of'the invention has been chosen 'forpurposes of illustration and description and is shown in the accompanying drawings, forming. a part of the specification, wherein:

Figure 1 is an 'el'e'vationai view of a control head, illustrating an'ernbo'dnnent of the invention.

Figure 2 is a sectional 'view, taken 'on the line 2 -2 on Figure '1.

Figure 3 is a sectional view, taken substantially Figure 8 is an elevational view, partly in sec-- tion, illustrating the control head and the means for operating the same from aremote' location.

Figure -9 is a fragmentary view; partly "in section of the control head and indicating means therefor.

Referring more particularly to the drawings, there isshowna control head ordevice suitable for operating or actuating means for releasing a pressure medium 'from 'a cylinder (not shown).

The device comprises abodyhaving a connecting The connecting portion is provided with an inner bore (Figure 2) comprising a lower chamber I4 and an upper chamber I5 of reduced diameter for housing an annular sealing or packing gland I6. A centrally located aperture or vertical passage I'I extends from the chamber I5 to the lower end of the casing portion II, for the purpose about to be described.

A suitable pin or rod I9 is mounted in the bore of the connecting portion In and extends through the packing gland I 6 and the passage IT. The upper end of the pin I9 is adapted to project into the casing portion II to be operated by a cam, described hereafter, and the lower end of the pin I9 is adapted to move downwardly of the body to engage and operate suitable means for effecting discharge of the pressure medium in the container. For example, the pin may engage and unseat a pilot valve member for effecting operation of a main valve or may trip a latch for releasing a spring mechanism adapted to in turn operate a cutter for piercing the closure disc on the container. These various means for eifecting release of the pressure medium are well known in the art and need not be described in detail.

Preferably, the pin I9 is urged upwardly by a cylindrical helical spring 20 telescoped about the lower portion of the pin I9. The upper end of the spring may abut a washer 2| which bears against a flange 22 on the pin, and the lower end of the spring may be seated on an inwardly extending annular flange 24 of a sleeve member 25 which is suitably secured in the lower chamber M of the bore. The extent of upward movement of the pin may be determined by providing a Washer 26 intermediate the sleeve member 25 and the shoulder intermediate the upper and lower chambers of the bore. The washer 26 acts as a stop for the flange 22 on the pin.

The casing portion II of the body may be integral with the connecting portion, as shown, or may be suitably secured thereto. Preferably, the casing portion comprises a cylindrical casing member 39 which has an end wall 3| and is open at the other end. An annular face 32 is provided adjacent the open end for attaching a suitable cover or closure, about to be described.

The cover or closure, preferably, comprises an outlet or conduit member 34 and a cover member 35 (Figures 2 and 3). The outlet member 34 has a segmental substantially annular base or flange portion 35 adapted to be secured to the annular face 32 in any suitable manner and has a segmental cylindrical skirt or wall portion 37 disposed perpendicularly to the base or flange portion 36. A tubular conduit or nipple portion 39 extends outwardly tangentially from the wall portion 31. The conduit portion is pro-' vided with a bore or aperture 40 for passing a pull cable or flexible member 4I into the casing and the bore may be provided with suitable screw threads for attaching a pipe or conduit adapted to shield the cable.

The cover member 35 has a substantially circular cover part 42 providing an end wall for the casing member 39 and has a substantially cylindrical wall or skirt portion 44 which is provided with an outwardly extending substantially annular flange Q5. The wall portion 44 and the flange 35 have a recess or cutaway portion providing an opening for receiving the flange portion 38 and the wall portion 31 of the outlet member 3 3, so that the cover and outlet members 00- operate as complementary members to provide a 4 closure for the open end of the casing member 30. The cover member 35, preferably, is detachably secured to the annular face 32 of the casing member 3!], whereby assembly, inspection, and repair of the device is greatly facilitated as will be described hereafter.

An actuator or actuating element (Figures 2, 3 and 4) is housed in the casing for operating the pin I8 and is mounted on a rotatable shaft 47 for rotation therewith, said shaft having one end We extending outwardly through a bearing aperture M3 in the end wall 3! and having its other end Mb extending outwardly through a bearing aperture 50 in the cover member 52 of the closure.

The actuating element comprises a cam 46 and a juxtapositioned sheave, or drum or pulley 54, the cam (Figure 4) having a cam surface 5| for engaging the pin I9 and moving it downwardly in opposition to the spring 28. Adjacent the cam surface 5i, the cam is formed with a circumferentially extending side wall portion 52 for isolating the cam surface 5i from the pulley and, by engagement with the pin, for preventing the cam from being displaced laterally out of engagement with the pin.

In the present instance, the cam and pulley are integrally connected together for unitary rotation with the shaft, the pulley or sheave 54 being formed with a relatively wide circumferential recess or groove 55 for receiving therein the end section of the flexible element or pull cable 4!, extending into the casing, the section being wrapped around the sheave and having its free end removably attached thereto.

In Figures 3 and 5 improved means for attaching the cable to the pulley are illustrated. The

side wall of the pulley is provided with a slot,-

groove or recess 55 which, for example, ma be elongated or rectangular in shape and a restricted opening or passage 5? leading to the groove 55 of the pulley. The free end. of the cable is secured into a cable clamping member 59 (Figure 5) which ma be a rectangular or elongated block having a longitudinal bore orslot til for receiving the end of the cable and having a pair of apertures GI extending transversely through the bore Ell. The apertures iii are screw threaded at one end thereof for receiving suitable screw means, such set screws or stud screws 64, adapted to engage thecable and force the engaged portions into the other end 65 of the apertures 6i to secure the cable to the block 59. The block 553 is adapted to be seated in the slot 56 so that the end ad jacent the restricted opening 57 abuts a shoul-' In assembling the casing portion of the device,

the shaft 4'! and the actuating element are introduced into the casing member 30 and with the end lla of the shaft extending through the bearing aperture 59 in the end wall 3i, whereupon, the flange portion 36 of the conduit member 34 is secured to the annular face 32. When the parts are thus positioned, the end of the cable is inserted through the nipple portion 35 of the conduit member and afiixed to the block 59. When the block is affixed to the cable, it is inserted within the slot 56 of the pulley and the:

latter ":is rotated sufficiently b01681 the 8111151866! tion of the cable i thereabout and to position-who cam face tin; la manner to; permit :the pint-19am bedisposedl itsyiuppermost -.or nonereleasing position. .Ihe-cover :member 35 .is them-secured to the member 30*andwith the end 41b:- of the shaft extending through; the aperture. 50 ,of the cover memben-the wall;portion-:31 of the a'GGIldl-lifi member :closing the access .wformeduinvythe 'skil'ii portion, 144 sot, the coverqmember. The construe?- tion and-arrangement-of --the iparts tare suchras tomermit {quick andaeasy assembly ofctheldevice by-runskilled vworkmen or operatorsin; a 1min?- imum-period oftimei.

The cable Hv "extends :tfromi-thel controll head or; device to a remote :location, suchuas Brit n trohpanel or the dike,- at which location anroperator 101v 5' other esuitable -:means are 1 provided: foroperating the cable to efiect actuation-of the control. head or device. Such remotely onerable means willwbeldescribed gin ,connectienwwith Figures '7 and 8, hereinafter.

The :"Shafft Al and actuating element mounted thereon :may also be -'=rotated-;;froma local location by;. a .-suitable 0138131301'." This may I'be,:'-a3U-' complishedivby ipivotally mounting ,a:lever or,---'a manually engageable handle "l0 trotatable 'with respect toethe :shaft; on rthe end of "the shaft 4111 extendin outwardly fithrough :theebearing aver- 11117650- -i the:end-wa1l;:3l..-' The handle :isi-p'rovided; ,with; la gpair -of\ diametrically ropposedl-ilugs or yprojections =11 adjacent; the shaft (Figure l adapted: to engage a pin, "12 extendingradially through :the eendii l'la rofcsthe shaft and having its ends 13. projectingvoutwardly from-the shaft By i swinging; or rotating .:the lever on: handle J0 in a clockwise (Figure --1), directionrethe lugs-:71 engage the ends of pins toiefie'ot 1'otation: of the shaft The handle preferably is attached: to the 1091s: ing portion to prevent accidental xmovemen't thereof. andtto enable the shaft :toi'be rotatedlby the pull cable independently of the handle. This; maybeefiecteduby inserting a .pinv'l5, .through anraperture 'l-fitin. the handleyand into adbore 11 formed in the casing member (Figurefi) .v, The pin 1115.,may vbe attacheditothe handle byia seal-i wire '19 adapted to: prevent the :pin; from-falling out of the aperture. 16 hand the. bore :11 andei's. provided with ,a fingerring .88 .at thyouterend for pulling the gpin ioutwardlyitdbreak the-seal, wire and withdraw thelpin from .thgborel'l and the aperture 16." When the. handle 'is v,held against movement by the pin, the. shaft may be rotated independently ,of the handle. ample, by pulling the cable the drum \or'vpulley rotates the "shaft in a clockwise. (Figure-,1) direct-ion andt'the ends 13 of the pin, #2 moveuaway from the lugs H until the shaft hasubeeniturnedthrough'about a half revolution. The pinsdthen engage the otherisides oithe'lugsand the-Inger by reasonof the fact that the handl'e is secured against movement,., act as stops toprevent-furtherrotation 'of the shaft.

It' is also desirable to prevent accidentaltrotae. tion of the cam while the device is being assembled *or reset; Suitable resilient locking or latching means may beu'tilized *for this purpose For 'ez zample; as shown in Figure 2 a piston, or.

catch member 81- having a rOundedQhead-may be 6 (Figured) in the v end wall :31, when; the 10am is in jitsmormal position priomto operatiom Upon; application :of a; substantial .aforce to rotate :the; shaft the epistonwis ---adapted :to be force-d outrof the i, recess, when; l the 1 cami has been? rotated about 135 and the epin, 1 9 {is pressed downward.

ly, the @piston ;-=is urged intoia ,second; recess on well 86 Tin the .end;wall; ill --to. :retain the cam in its operating qposition: Excessive rotation ofthe cam may be preventedcby-providing a;lstopl 81omthe side of the-cam'and adjacent {the piston which, engages a; stop 1289 on theend wal -lposition to stop rotation of the' cam when it is rotated intoits: operating position;-

Resetting oft the-device may be: effected by.

manually-rotatingthza shaft 41 in aicounter clock- Wise rdirection auntil the .tcatch member 8 I; :snaps intoethe recess 85.- Thiswmay beaccomplished; bytproviding anaperture Sui-extending through theend. 41b of the shaft forreceiving a -rod;mem.- ber orthellikt Also if. desired the enddla of the shaft may ibe prov-idedr with a'slot 19! forgreeeivingl arsc rew.- .driver orwothertsimilar tool foe rotating the.shaft.-

In. Figures :7 ,and -fi there isyshown 'an'operator Refor operating the control head from a remote locationlsuchl as .aecontrol panel 93. The opera? tor comprises a -fitting-or;--sleev 94 havingqone end extending. through. an opening -in-the panel and having a collar or flange 95 engagingeonel side, of the 'panel iand iaenut '96 ethreaded tin-the sleeve; 94 1 and; engaging the other side: of the panelnto.secune thetsleeve to thewpanel. The end'of thevsleeveeat ,theefront nor control iside Of the ,panellis formedtwithiaisocket on recessedlpor tionell'l Aforreceiving the shankm98 oi'za-apull handle, 99 :or the like, which- :is providedwwith .a: bore or recess, for secu ingwa shaft tor-rod 400 slidably mounted in and! extendingthrough the sleeve 94 The-,end-ofi theushaft I00 'at the rear oi the: contr.ol. pane1 extends beyondthev-sleeve and has connected thereto lend portion -=--l I] I of the cable ll -the latter being guided! ,over. a; pulley-J B2,? or

' severalhpulleys, it desired, to the control head;

The end. i of :theshaft I .00 eat which the cable :is connected is formed: "with ,a collar or stop: I203. adapted zto-ienage theisleeve 94 'when the pull-; handle is" operated to, limit :the 1 movementof the shaft so that ithe-cable is pulled laqdesired distance tO EfiECtniIOtfitiOHeOF the actuating element within the COI'ItI'OIJNBId-r In order to .preventaccidentalor unintentional movement. of: Fthe tpull-handlease withi'respect to.

. the s'leeve the shaft 5 I00 is formed :with a.= circumfenential, ,rgroovewlifl whiche'receives a .pin: I05 extending.gtransverselyth'rough 1av'bore I06 formediin the sleeve-whereby the shaft is latched toJtheisleeve, =1=!referably,-;the 10in ,l05wis provided :Withna finger-ring :lfll rtoufacilitate withidrawingfl theepin from: the :sleeve and to thereby unlatch the.-.pull-handleshaft 131 0! operations Unauthorized'operationwofi =the-pull-handle is discouraged ;b v-a :seat wire a l 03 extending through 4 thetfingeriring r401- rand tan aperture in "an: ear

r a fo d s-theicollamli :of thesleevel The seal wire also prevents accidental dislodgme'nt of the pin from the bore 406 in the sleeve and serves to indicate whenthe=pullehandle has been. operated or tampered; with.-

.Iniorderwtol effect -rotation-of the actuating elementoi the controlhead;;:or "device by means of the operatonR, the :pin' mils-withdrawn fromthe sleeve, -andthe handle 99is grasped and-pullei'l iniadirection away fromythe panel. This operation may be accomplished while the handle or locally operable operator 10 is locked against movement as shown in Figure 2. Likewise, the handle 70 may b operated to rotate the actuating element, while the pull-handle is latched as shown in Figure 8. Thus, either the locally stationed operator or hande 10, or the remotely stationed operator R. or pull-handle 99 may be operated independently and without coincident operation of the other operator.

If desired, and as illustrated in Figures 8 and 9, means may be provided for indicating the position of the actuator in the casing. In the present instance, the cover member 35 is formed with a window I i5, while the adjacent face of the pulley is provided with a plate H6 having green and red zones it? and H8, respectively, for observation through the window. The plate H8 is so arranged on the pulley that the green and red zones indicate the inactive and active positions of the actuator, respectively, thus, enabling an observer to b informed as to whether the fluid medium has been released from the container. While the member 35 is shown as being formed with a window and the pulley being provided with the plate, it is to be understood that the member 30 and the cam may be provided therewith, respectively. Furthermore, the zones may be provided with different colors and/or indicia if desired.

From the foregoing description it will be seen that the present invention provides a simple, inexpensive, improved control device which is adapted to be operated locally and remotely. The device is simple in construction and positive in operation. The device can be readily assembled, installed, repaired and inspected and is particu larly adapted for installation in crowded quarters where the workman is handicapped by not being able to have the device in full view. The cover for the casing is arranged so that the cable can be conveniently slipped through the conduit piece and then attached to the clamping member which is readily placed into the slot in the pulley. This arrangement insures proper assembly and installation in a minimum amount of time without the aid of special tools or damage to the parts of the device. The device is rugged in construction and can readily withstand any rough usage to which it may be subjected.

As various changes may be made in the form, construction and arrangement of the parts herein, without departing from the spirit and scope of the invention and without sacrificing any of its advantages, it is to be understood that all matter herein is to be interpreted as illustrative and not in any limiting sense.

It is also to be understood that the following claims are intended to cover all the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

This application is a continuation-in-part of our prior application filed August 30, 1941, Serial Number 409,110, now abandoned.

We claim:

1. In a device of the class described, the com bination of a substantially cylindrical casing member having an open end and an annular end face adjacent the open end, a conduit member having a segmental annular base portion secured to said face and having a segmental cylindrical Wall portion provided with a tubular conduit portion; and a cover member for said cas ing having a cylindrical wall provided with an opening for receiving said wall of said conduit member and having an annular outwardly extending flange adapted to be attached to 'said face, said flange having an opening for receiving the base portion of said conduit member.

2. In a device of the class described, the combination of a substantially cylindrical casing member having an open end and an annular end face adjacent the open end, a conduit member having a segmental annular base portion secured to said face, a segmental cylindrical wall portion perpendicular to said base portion and a tubular conduit portion extending tangentially with respect to said wall portion; and a cover member for said casing having a cylindrical wall provided with an opening for receiving said wall of said conduit member and having an outwardly extending annular flange adapted to be attached to said face, said flange having an opening for receiving the base portion of said conduit member.

3. In a device .of the class described, the combination of a substantially cylindrical casing member having an open end and an annular end face adjacent the open end, a conduit member having a segmental annular base portion secured to said face and having a segmental cylindrical wall portion provided with a tubular conduit portion, a cover member for said casing having a cylindrical wall provided with an opening for receiving said wall of said conduit member and having an annular outwardly extending flange adapted to be attached to said face, said flange having an opening for receiving the base portion of said conduit member, a cam rotatably mounted in said casing member, a pulley mounted for rotation with said cam and having a recess therein, a cable extending through the tubular conduit portion and about said pulley, and a clamping member attached to the end of said cable and mounted in the recess of said pulley.

l. In a device of the class described, the combination of a body having a slidable member therein and having a casing portion, a rotatable cam in said casing portion having a cam surface for operating said slidable member, a sheave mounted for rotation with said cam. a cable eX- tending about and attached to said sheave for effecting rotation thereof, a shaft rotatable with said cam and sheave carried by said casing portion and having one end thereof extending outwardly from said casing portion, a member extending radially outwardly from the outwardly extending end of said shaft, and a manually engageable lever rotatably mounted on the outwardly extending end of said shaft adjacent said radially extending member, said lever having a projection for engaging said radially extending member to effect rotation of said shaft upon rotative movement of said lever about said shaft.

5. In a device of the class described, the combination of a body having a slidable member therein and having a casing portion, a rotatable cam in said casing portion having a cam surface for operating said slidable member, a sheave mounted for rotation with said cam, a cable extending about and attached to said shaft for effecting rotation thereof, a shaft rotatable with said cam and sheave and carried by said casingthe outwardly extending end to provide diametri-:

cally opposite engageable portions on said shaft,

and amanually engageable handle-member rotatablymounted on' the outwardly extending end ofsaid shaft adjacentsaidpin, said handle-member havingapair ofdi'ametr ically opposite projections for engaging the portions-of said pin and effecting rotation of said 'shaft upon rotative movement of said handle-aboutsaid shaft.

6. Ina device of theclass described, the combination of a body having a slidable member thereinandhaving a casing portion, a'rotatable cam in said-casing portion having a cam surface for operating said slidable member, a sheave mounted-for rotation with said cam, a cable extending about and attached to said sheave for effecting rotation thereof, a shaft rotatable with said cam andsheave'carried by said casing portion' and having one end thereof extending out of said casing portion, a member extending radially outwardly from the'outwardly extending endof said shaft, a manually engageable lever rotatably mounted on the" outwardly extending end of said shaft adjacent said radially extending member, said lever having a projection for engaging-saidradiallyextending member to effect rotation of said-shaft on rotative movement of said lever about said shaft, and means for attaching said lever tosaid portion and preventing rotationthereof, said means being adapted to be manually released.

7. In a device of the class described, the combination of a bodyhaving a slidable member therein and having a casing portion, a rotatable cam in said casing portion, having a cam surface for operating said slidable member, a sheave mounted for rotation with said cam, a cable ex- I tending about and attached tox-said sheave for efiecting rotation thereof, a shaft rotatable with said cam and sheave-and carried by said casing portionwith one end extending outwardly thereof, a pin" extending radially through said shaft at theoutwardly extending end to provide diametrically'opposite.engageable portions on said shaft, a-rmanually engageable. handle member rotatably mountedonthe outwardiy'extending end of said shaft adjacent said pin, said handle member havingga: pair of diametrically opposite projections forengaging the portions of said pin and effecting rotation of said. shaft upon rotative movement of said handle about saidshaft, and means for attaching 'said'handle member to said casing portionto prevent movement of said handle member, said-means being-adapted'to be manually released.

; '8; In. a device of the class describedf the combination of a body having a slidable element therein and having a casing portion provided with an end wall, a rotatable cam member in said casing portion having a cam surface for operating said slidable element, a sheave member mounted for rotation with said cam member, and a pull cable extending about said sheave member for effecting rotation thereof, one of said members and said end wall having cooperating spring urged latch means and latch receiving means for preventing accidental rotation of said cam and sheave members.

9. In a device of the class described, the com-,

carryinga springurged projection extending outwardly'toward the end Wall of said casing portion, and said 'cas'ing endwall having arecess for receivingsa'id projectionwhen said cam and sheave members are in set "position and having a second recess for"'receiving said projection when said cammember'has'b'eenoperated to latch the cam and sheave members in operated position, Whereby the camsurfaceismaintained in a position to op'eratesaid slidable element.

19. ln a-de'vice of the classdescribed, the combination of a body having a slidable member therein and having a substantially cylindrical casing portion provided-with an end wall, a rotatableshaftdi'spos'ed in said casing portion, a cam member onsaid shaft havinga cam surface fOrDDEZaEiIIg said "slidable member, a sheave member on saidshaft mounted for rotation with said cam member, and a pull" cable extending about"said sheave member for'effecting rotation thereof, said cam member carrying a spring urged projection extending outwardly toward the end wall of said'casingportion, and said casing end wall havingai'ecess' for receiving said projection when saidcamand sheave members are in a set position and having a second recess for receiving said projection when" said cam member has been operated to latch the cam and" sheave members in operatedposition; whereby the cam surfaceis maintained inapositionto operate said slidable member.

11'. In a'deviceof the class described, the combination ofa casing, a shaft rotatably disposed insaidnasing andhaving one end thereof extendingoutwardlyfrom-"saidcasing; a sheave in said casingTmountedfbr'rotationwith said shaft, a cable extending aboutand attached to said sheave for effecting rotation thereof, a member extending radially fromth'eoutwa'rdly extending end of said shaft, and-a manually engageable lever rotatably'motintedon theoutwardly extending end of -saidshaft"adjacent said radially extending member;saidflever'havinga projection for engaging said radiallyextending member to effect rotation of said s'haftupon'rotative movement of said lever about saidshaft.

12; In adeviceof the'classdescribed, the combination of-a casing, ashaft rotatably disposed in said "casing" and havingone end thereof extendingoutwardly' fro'm'said'casing, a sheave in said casing mountedfor' rotation with said shaft, a cable extending about andattachedto said sheave for-effectingfrotation thereof, a member extending radially'from the outwardly extending end of said shaft, a'manually engageable lever rotatably mounted on the outwardly extending end of said shaft adjacent said radially extending member, said lever having a projection for engaging said radially extending member to effect rotation of said shaft upon rotative movement of said lever about said shaft, and means for attaching said lever to said casing and preventin rotation thereof, said means being adapted to be manually released to facilitate operation of said lever.

13. In a device of the class described, the combination of a body having a slidable member therein and having a casing portion, a shaft rotatably disposed in said casing portion and having one end thereof extending outwardly from said casing portion, a cam in said casing portion mounted on said shaft for rotation with said shaft and having a cam surface for operating said slidable member, a member extending radially outwardly from the outwardly extending end of said shaft, a manually engageable lever rotatably mounted on the outwardly extending end of said shaft adjacent said radially extending member, said member having a projection for engaging said radially extending member to effect rotation of said shaft upon rotative movement of said lever about said shaft, and means for rotating said shaft independently of the operation of said lever.

14. In a device of the class described, the combination of a substantially cylindrical casing member having an open end provided with a substantially annular end face, a conduit member having a base portion secured to said end face and having a wall portion provided with a tubular conduit portion, and a cover member for said casing member having a substantially annular base portion attached to said end face and having a substantially cylindrical wall portion, said base and wall portions of said cover member being provided with recesses adapted to accommov date said conduit member.

15. A pulley casing comprising a casing member having an open end, a conduit member having a wall portion provided with a tubular conduit portion, means for attaching said conduit member to said casing member at said open end, a cover member for said casing member having a wall portion provided with a recess adapted to accommodate the wall portion of said conduit member and means for attaching said cover member to said casing member at said open end.

16. A pulley casing comprising a casing member having an open end, a conduit member having a Wall portion provided with a tubular conduit portion, means for attaching said conduit member to said casing member at said open end, a cover member for said casing member having a wall portion provided with a recess adapted to accommodate the wall portion of said conduit member, means for attaching said cover member to said casing member at said open end, a pulley mounted for rotation in said casing member and having a recess therein, a cable extending about said pulley, and a member secured to said cable and disposed in said pulley recess to attach said cable to said pulley.

17. In a device of the class described, the combination of a sheave mounted for rotation, said sheave having a groove and having an end face provided with a recess which has a restricted portion at one end thereof leading to the groove of said sheave, an elongated cable clamping member removably positioned in said recess and having a longitudinal slot therein, a pulley cable ex- 12 tending around said sheave and lying in the groove thereof and having its free end extending through the restricted end of said recess and disposed in said slot, and means attached to said clamping member for securing the free end of said cable in said slot.

18. A pulley casing comprising a casing member having an open end, a conduit member having a wall portion provided with an outlet portion, means for attaching said conduit member to said casing member at said open end, a cover member for said casing member having a wall portion provided with a recess adapted to accommodate the wall portion of said conduit member and means for attaching said cover member to said casing member at said open end.

19. A pulley casing comprising a casing member having an open end, a conduit member having a Wall portion provided with an outlet portion; means for attaching said conduit member to said casingmember at said open end, a cover member for said casing member having a wall portion provided with a recess adapted to accommodate the Wall portion of said conduit member, means for attaching said cover member to said casing member at said open end, a pulley mounted for rotation in said casing member, and a cable member extending about said pulley and through said outlet portion, said cable member being secured to said pulley.

HARRY 0. GRANT, JR. ARTHUR E. REICHARD.

REFERENCES CITED The following references are of record in the '1' this patent:

UNITED STATES PATENTS Number Name Date 1,040,844 Augenbaum Oct. 8, 1912 1,468,114 Kendrick Sept. 18, 1923 1,782,020 Allen et a1. Nov. 18, 1930 2,027,275 Foster Jan. 7, 1936 2,077,150 McWhirter et a1. Apr. 13, 1937 2,181,805 Fritz Nov. 28, 1939 I 2,314,547 Maule et a1 Mar. 23, 1943 2,358,094 Panish Sept. 12, 1944 2,386,210 Grant, Jr. Oct. 9, 1945 FOREIGN PATENTS Number Country Date 518,736 France May 30, 1921 592,722 France Aug. 8, 1935 293,915 Great Britain July 19, 1928

Images