US3106229A

US3106229A - Heald frame holder for looms

Info

Publication number: US3106229A
Application number: US75695A
Authority: US
Inventors: Gebhardt Eugen
Original assignee: Maschinenfabrik Rueti AG
Current assignee: Ruti Machinery Works Ltd; Maschinenfabrik Rueti AG
Priority date: 1959-12-21
Filing date: 1960-12-14
Publication date: 1963-10-08
Anticipated expiration: 1980-10-08

Description

Oct. 8, 1963 E. GEBl-IARDT` HEALD FRAME HOLDER Foa LooMs 2 Sheets-Sheet 1 Filed Dec. 14, 1960 oct. s, 1,963

Filed Dec. 14, v 1960 E, GEBHARDT lHEALD FRAME HOLDER FOR LOOMS 2 Sheets-Sheet 2 "D Fig/f Illll Ilm L@Il

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United i States Patent O 3,106,229 HEALD FRAME HOLDER EUR LOMS Eugen Gebhardt, Ruti, Zurich, Switzerland, assignor to Ruti Machinery Works Ltd., formerly Caspar Honcg- This invention relates` `to heald frame holders for looms with lateral suspension of the heald frames (or shafts). It is known to provide the vertical side supports of the lframes each with projecting undercut lugs on which a heald frame engages by means of -two notch-engaging The suppont lugs on eithe-r side of the heald frames are at a fixed distan-ce from each other. In the prior art embodiment, the holders `are each furnished with -two notch-engaging noses which 'are likewise at a definite fixed spaced relation adapted to the two support lugs on the heal-d frames such as shown for Iinstance in the British Patent No. 542,902. In order Ito prevent play as far as possible in the upward and downward movements of the heald frames, it is necessary to adapt the lugs and notchengaging noses accurately to one another. This requirement Ibeing very diiiicult to salti-stay in actual practice, a certain amount of play is `frequently found likely to manifest itself very adversely at high loom speeds, inthat the amount of play Igradually increases, because Iof lugs and notch-engaging noses becoming worn.

This ditiicul-ty becomes more serious due -to the fact that a certain holder should fit a large number of difierent heald frames, since the frames are interchangeable, whereas the holders remain in the machine. l

Therefore, instead of a form-locking coupling, `also a force-locking coupling has already been yadopted in that the aforedescribed play between the lugs and notchengaging noses was nullified by a spring, such as shown inthe British Paten-t No. 453,346. However, this coupling Iwas found less suitable for transmitting biginertia forces.

Nrow the present invention relates to a heald frame holder in which the described disadvantages are obviated with certainty. The holder :is principally characterized in that only `one notch-engaging nose thereof is arranged in a fixed position, while 'the other notch-engaging nose is movably designed and can be pressed against the associated lug of the heald frame by means of la toggle clamping device. Moreover, the invention permits of adjusting the vertical position of the heald frames from an easily accessible point without the heald shaft drive having to be slackened. Such devices for adjusting the vertical position are known per se, but they do not lend themselves to combination with the aforenamed toggle clamping device.

Now this is possible with fthe device according to the invention in that it includes, in accordance with a further feature, a clamping device adapted lto secure the heald fname to the drive or motion) by la device for fine adjustment of the lventical position of the frame.

Funther features of the invent-ion will appear from the following description and claims, taken in conjunction with the accompanying drawing which shows purely by way of example two forms of embodiment incorporating the invention.`

In said drawing:

FIG. l shows a front view of the end of 'a heald fname with the laterally arranged lugs for fixing the same;

FIG. 2 is a lfront View and part-vertical section of a heald frame holder according fto the first form of embodiment, and the adjacent part of a heald frame;

FIG. 3 is a part-front view 'and part-vertical section of l a heald frame holder and the 'adjacent part of `a heald frame;

ice

2 FIG. 4 shows an end view from the right in FIG. 3 of l the 4heald frame holder alone, on a larger scale.

Referring to said annexed drawing, the heald frame 1 illustrated in FIG. 1 possesses at both ends 2 (one only shown) an upper lug 3` and a lower lug 4, each with a notch 5 'and 6 respectively for fixing 'the heald frame to the holders.

Each ofthe two holders 7 (one only shown in FIG. 2) includes a tubular rail 8 of rectangular cross-section with a slot-like 'opening- 9 for Ithe entry of the lugs 3 and 4 of the heald frame. A rod 11 representing the upper end of the heald shaft drive is firmly connected to said rail 8, as by rivets 1d. 'Ilhe lower end `of the -rod 11 is connected to .the heald shaft driving arnangement.

The rail 8 has arranged therewith a tubular rail 12 lik wise of rectangular cross-section. The two

rails

8 and 12 each have a lug 8a and 12a, and each of `said lugs having longitudinally tapped holes 8c and 12C, respectively. A set-screw 13 is arranged said longitudinally tapped holes 8c and 12e for adjusting the rail 12 with respect Ito the rail 8. Two nuts 14 and 15 :serve to secure them in position to prevent inadvertent turning of the screw bolt 13.

rPhe lower end of rail 12 has fixed thereto by rivets 17 -a notch-engaging nose 16 for engaging in the lug 4 on the side 2 of heald frame 1.

The top part of rail 12 has pushed thereinto a two-part rod 18 which is linked to the rail 12 through two levers 19, 2li in that the levers 19 at one end is pivoted to the rod 18 and at Ithe other end to lever 2li which, in turn, is pivoted with a pin Zlib in the pivotal hole in the lug 12b on rail 12. The rod 18 possesses at its bot-torn end a notchengaging nose 21 for engaging lthrough the slot 9 and 12d opening on the outer rails 8 land the inner rail 12 respectively the lug 3 on the side 2 of heald frame 1. The length of the two part rod 18 of rectangular cross-section may be changed by la set-screw 22 `forming a part thereof and iixed by a lock nut 22a on screw 22. The adjacent ends of said two longitudinally arranged pants of rod 18 are similarly tapped.

The action of the described heald frame holder is as follows: Y

Let it first be assumed that the holder 7 is `separate from the associated frame 1. On joining the frame 1 to the holder 7, 4at first the notch 6 of lug 4 Ion the frame is brought into engagement with Vthe associated notch-engaging nose 16 of holder 7, while the rod 18 is brought into its topmost position by raising the hand lever 20 by means of levers 19. By lowering yt-he hand lever 20, the notch-engaging nose 21 of rod 1S engages the notch 5 in lug 3i.

inasmuch as the spacing between the lug-s 3` and 4 is not constant for yall frames, land 'also may change in the course of time due -to wear, the frames may be mounted on rthe holders free from play by suitably adjusting the length of rod 13 by means of the screw 22.

In `order to adjust the vertical position of the heald frame, the nuts 14, 15 'are slackened, whereupon by turn- .ing the screw bolt 13, the clamping devicewith the heald frame 1 may be changed in relation to the rod or heald drive shaft 11 without the clamping device having to be released.

In the second form `of embodiment according to FIG. 3, a heald frame is of conventional design. Each end of the fra-me has ltwo notched lugs 111 land `1.12. Each of the holders (one only shown in FIGS. 3 and 4) includes a rail 113 of substantially U-shaped section, whose lower end .is coupled to la vertical tie-rod 114. The rod 1.14 is rigidly secured to the rail 1.13, as by rivets 115. The top Vof rod` `114 is designed as a notch-engaging nose 116 which engages a suitable notch in lug 112. The bottom of rod 114 is joined to the means for driving the heald frame.

annessa The upper end portion of the guide rail 113 has a slide 117 `arranged therein `for lengthwise movement. '111e slide 117 exhibits an elongated slot '113 engaged by a pin 119 which is fixed to the flanges of the guide rail 113 and serves for guiding the slide 1-1'7. The bottom end of slide 1117 is designed as a notch-engaging nose 12u which may engage a `suitable notch in lug 1111.

The upper end of slide 117 has welded thereto a bolt 121 possessing a screw-threaded portion. The latter is engaged by ian internally threaded sleeve 122 which is supported `in a guide tube 123 for longitudinal adjustment.

Both the tube 123 and the top of guide rail 113 are firmly connected to a carrier plate 124- having the guide lug 125 for the heald frame holder yaffixed thereto by rivets 1-25. The

parts

113, 114, 123, `12dland 12d together constitute the holder body.

The bolt 121 is encircled by a coil compression spring 127 which, with one end, bears against the slide 117 and with the other end against the glide tube 123. Said spring 127 tends to push the slide 117 downwards into its effective position. By means of a hinge pin 12S, the top end of the threaded sleeve '122 is joined `to a link 129 which, in turn, is connected through a toggle joint pin i139 to a clamping lever 131. Link 129 and clamping lever 131 together constitute the toggle arrangement. The clamping lever 131 comprises two parallel legs having the link `129 pivoted therebetween. The two legs of the clamping lever 131 have between them a cross-pin 132 arranged to press against Ka nose 133 on the carrier plate 124. At the top the clamping lever 131 also has between its legs an :abutment piece 134 which is provided for resting on a stop face 135 of the carrier plate 124.

The :action of the described heald frame holder is as follows:

Let it rst be assumed that the holder is separated from the 'associated heald frame 110. On joining the frame to the holder, at first the lug 112 is brought into engagement with the associated notch-engaging nose 116. As the slide 117 is moved upwards by pull on lever 131 against the action yof spring 127, the upper lug 111 of heald frame 111i is pushed into the guide rail 113, whereupon release of lever 131 causes `the notch-engaging nose 121i of slide 117 to become engaged with lug 1111 by action of spring 127. This results in a provisional connection between frame and holder.

The frame 110 is then mounted on the holder free from play by rocking theclamping lever 131 so as to cause the toggle joint pin 130 to move towards the guide lug 126. Subsequent yto this, the orosspin `132 may be engaged with the underside of nose 133. Then the top of clamping lever 131 is pressed against the guide lug 126, thus causing said lever 131 to turn :about the crosspin 132 and the toggle joint pin 4130 moves away from the guide lug somewhat beyond the dead center position until the abutment piece 134 of the clamping lever lies against the stop face 135 of carrier plate 1214, thus limiting the pivotal movement of lever y131 in its clamped position. Through toggle action of the parts 129 .and 131, the Ithreaded sleeve 122 with the bolt 121 is pressed downwards and thereby the slide 1.17 firmly pressed `against the lug i111 to thus mount the frame 11?` free from play in the holder.

In order to remove the frame i116 from the holder, the clamping lever 131 is swung away from the guide lug 126, whereby the toggle `action is discontinued, whereupon the crosspin 132 `of the clamping lever may readily be disengaged from the nose 133. Then it is possible, again with the `aid of lever 13.1, to withdraw the slide 117 upwards against the action of spr-ing 127, whereby the notchengaging nose 120 Amoves clear of lug 111.

With the toggle `arrangement in the released position last described, the crosspin 132 of lever :131 may be brought into engagement with the upper surface of the nose 133. The spring 127 then securely holds the lever 131 in said position. In this way it is possible to secure yagainst inadvertent movement the clamping levers of such holders `as do not mount frames for certain weaving operations, in `order thereby to prevent mutual interference between the clamping levers of adjacent holders.

Since thc spacing between lugs 111 `and 112 is lnot constant for all heald frames and may even change in the course of time due to weer, possibility of readjusting the toggle arrangement is given by suitably turning the threaded sleeve 122 on the threaded portion of bolt `121. Thereby the distance of the hinge bolt 1123 from the slide 117 changes according to the pitch of the thread. No -tool is required to :adjust the threaded sleeve `122, it Imerely suffices to turn the lever 131 after disengaging from the nose 133.

In a modification (not shown), the connection between slide 117 and hinge bolt 123 of the link 129 is not adjustfable. in that case the nose 133 could be adjustably mounted on ythe plate 124 by means of a set-screw in spindle form `in order to make possible adjustment of the position or" the notch-engaging nose 126 in the tensioned position of the toggle linkage 129-130, for `adaptation to the associated lug `111.

1t is understood that other changes and modifications may be made in the embodiments illustrated and described herein without departing from the scope of the invention as defined by 'the following claims.

What I claim is:

1. in ia loom having a heald drive shaft, an adjustable heald frame holder for holding rectangular heald frames of variable sizes, said frames individually having opposite ends `and two similar outwardly-extending lugs spaced symmetrically apart on each of said frame ends, each said frame lugs having a notch defined therein, said notches of the same end being oppositely direct-ed, and said frame holder comprising two identical sides for holding each said frame end, each said identical part cornprising: rail means having two ends and secured by one said end to the drive heald shaft for being driven thereby; opposed notch-engaging noses attached to said rail means and spaced longitudinally apart to respectively cooperating with and engage in said oppositely directed and spaced notches of said notched frame lugs, one said nose being rigidly fixed, and the other said nose being longitudinally movable in sa-id rail means with respect to said fixed nose; linkage means for slidably actuating said movable nose to lock and release said noses and said notches; and screw means for longitudinally moving said movable nose to adjust the space between said longitudinally spaced apart projections in order that said noses fully engage in said respective frame lug notches to immovably lock said noses in said notches, whereby each side of said heald frame holder is adjustable to engage the sides of a variety of heald frames having variably spaced lugs.

2. An adjustable heald frame holder as described in claim l characterized in that said rail means comprises: two tubular rails of rectangular cross section and adapted to engage telescopically, one said rail being the outer rail having two oppositely disposed outer rail ends with one said outer rail end being secured to said heald drive shaft, said outer rail having -a longitudinal slot-like opening intermediate said one and the other outer rail ends for the entry therein of said frame lugs, and the other said rail being the inner rail having two oppositely disposed inner rail ends with one said inner rail end telcscoping to a position adjacent said one outer rail end and having said rigidly fixed nose attached to said one inner rail end and facing away therefrom opposite a portion of said slot-like opening for the full engagement of said rigidly fixed nose in one frame lug notch, and the other said end ou one side having a lateral lug extending outwardly therefrom, said lateral lug having a transverse pivot hole; engaging means on the other ends of said outer and inner rails for adjustably engaging and positioning said inner rail -and rigidly attached nose with respect to said outer rail and a notched frame lug extending theret in; a length-adjustable rod means having oppositely disposed ends, slidably mounted in the other end of said inner rail, said one length adjustable rod end extending outwardly therefrom and the other length adjustable rod end defining said longitudinally movable nose; a hand ylever having two oppositely disposed lever ends pivoted at one said lever end in said tapped hole in the lateral lug of the inner rail and pivotally linleed intermediate said lever ends to said one end of said length-adjustable rod for longitudinally moving `said length-adjustable rod and said movable nose in said inner rail lwith said handle lever means to a fully engaged position in the other frame l-ug notch thereby locking both said noses in respective frame lug notches and to a fully disengaged position from said other frame lug notch, thereby unlocking both said noses and said frame end from said holder side.

3. An adjustable heald frame holder as described in claim 2 characterized in that said engaging means on the other ends of said inner and outer tubular rails comprises: a lateral lug extending outwardly on said outer rail and tapped longitudinally; a similar lateral lug extending outwardly on said inner rail and similarly tapped; a screw bolt engageable in said longitudinal taps of said lateral lugs for longitudinally positioning the inner tubular rail with respect to thev outer tubular rail; lock nuts onsaid vscrew bolt between said inner and outer rail lugsysaid nuts for rotation to respectively contact said lugs and lock said screw bolt with the lugs and integral rails in relative position for engaging said one said frame lug notch.

4. An adjustable heald frame holder as described in claim 2 characterized in thatlength adjustable rod means comprises: a two part rod of rectangular cross section having its parts [longitudinally arranged in extension'of the other and adapted to slidably engage in said inner tubular rail, the adjacent ends of said t-Wo longitudinally arranged parts being similarly tapped; a screw threaded for its full length to simultaneously engage the tapped ends of said two part rod, the length of said two part rod being established by the rotation of said screw and the unengaged length of said screw intermediate said long arranged parts; la lock nut on said screw intermediate said parts for rotation to contact a said part and lock said screw against rotation whereby said two part rod means is lockably adjustable in length 'when said hand leverV means is moved to said fullyengaged position for said longitudinally movable nose to fully engage one said frame lug notch when the said iixed nose is fully engaged in the other said frame lug notch.

5. An adjustable heald franre holder as described in claim y1 characterized in-that said rail means comprise: a

rail of substantially U-shaped cross sections and having two oppositely disposed ends, said heald drive shaft being rigidly attached to one said nail end and in continuance thereof, and said heald drive shaft defining said iixed nose at said attached end; a slide having two ends anda longitudinal slot therebetween, said slide dening said movable nose on one said slide end extending toward said fixed nose and said slide being Vslidably mounted in the rail near said rails other end; a pin transversely lixed in said rail and engaging said longitudinal slot for guiding said slide in longitudinalmovement; a threaded bolt welded on the other said slide end; an internally threaded A sleeve adjustably engaging said threaded bolt; a guide tube iirmly connected to the other end of said rail and slidably supporting said internally threaded sleeve for longitudinal movement; a carrier plate having a nose defined beyond the other end of said rail and oi center therewith and having a stop face extending beyond said nose, said carrier plate being fastened to the other end of said rail and to said guide tube; a guide Ilug for said heald frame holder tixedly attached to said carrier plate; a coil compression spring mounted on said threaded bolt intermediate said slide and said guide tube for biasing said slide and movable nose toward said opposed iixed nose; a togglelink pivotally pinned at one end to said internally threaded sleeve; a Idouble legged clamping lever having two ends, one said end being pivotally pinned to the other end of said toggle link for moving said toggle link into and out of toggle locked lassociation therewith; a cross pin secured to the legs of said clamping lever and positioned therebetween its legs and ends to engage said nose defined on said carrier plate as van axis of rotation of said clamping lever; an abutment piece secured to the other and free end of said clamping lever for limiting the movemnt of said clamping lever in one direction of rotation to thereby lock said toggle joint and attached said slide against longitudmal movement in a direction away from said fixed notch `engaging nose, said clamping lever being limited in rotation in the other direction by its engaged end contacting said carrier plate to unlock said toggle joint to permit the slide and movable nose to be longitudinally moved against said coiled spring bias to release said movable nose from a frame lug notch to disengage the other frame lug notch from said iixed nose.

References Cited in the file of this patent UNITED STATES PATENTS 2,106,504 lLindquist Jan. 25, '1938 FOREIGN PATENTS 803,046 Germany IFeb. 26, 1951 803,106 Germany Feb. 26, 1951 468,585 italy Jan. 26, 1952

Claims

1. IN A LOOM HAVING A HEALD DRIVE SHAFT, AN ADJUSTABLE HEALD FRAME HOLDER FOR HOLDING RECTANGULAR HEALD FRAMES OF VARIABLE SIZES, SAID FRAMES INDIVIDUALLY HAVING OPPOSITE ENDS AND TWO SIMILAR OUTWARDLY-EXTENDING LUGS SPACED SYMMETRICALLY APART ON EACH OF SAID FRAME ENDS EACH SAID FRAME LUGS HAVING A NOTCH DEFINED THEREIN, SAID NOTCHES OF THE SAME END BEING OPPOSITELY DIRECTED, AND SAID FRAME HOLDER COMPRISING TWO IDENTICAL SIDES FOR HOLDING EACH SAID FRAME END, EACH SAID IDENTICAL PART COMPRISING: RAIL MEANS HAVING TWO ENDS AND SECURED BY ONE SAID END TO THE DRIVE HEALD SHAFT FOR BEING DRIVEN THEREBY; OPPOSED NOTCH-ENGAGING NOSES ATTACHED TO SAID RAIL MEANS AND SPACED LONGITUDINALLY APART TO RESPECTIVELY COOPERATING WITH AND ENGAGE IN SAID OPPOSITELY DIRECTED AND SPACED NOTCHES OF SAID NOTCHED FRAME LUGS, ONE SAID NOSE BEING RIGIDLY FIXED, AND THE OTHER SAID NOSE BEING LONGITUDINALLY MOVABLE IN SAID RAIL MEANS WITH RESPECT TO SAID FIXED NOSE; LINKAGE MEANS FOR SLIDABLY ACTUATING SAID MOVABLE NOSE TO LOCK AND RELEASE SAID NOSES AND SAID NOTCHES; AND SCREW MEANS FOR LONGITUDINALLY MOVING SAID MOVABLE NOSE TO ADJUST THE SPACE BETWEEN SAID LONGITUDINALLY SPACED APART PROJECTIONS IN ORDER THAT SAID NOSES FULLY ENGAGE IN SAID RESPECTIVE FRAME LUG NOTCHES TO IMMOVABLY LOCK SAID NOSES IN SAID NOTCHES, WHEREBY EACH SIDE OF SAID HEALD FRAME HOLDER IS ADJUSTABLE TO ENGAGE THE SIDES OF A VARIETY OF HEALD FRAMES HAVING VARIABLY SPACED LUGS.