US2052567A - Grooving machine - Google Patents

Description

' Sept. 1 1936. w. M. HAINES GROOVING MACHINE Filed Nov. 21, 1935 4 Sheets-Sheet l Sept. 1,1936. w. MuHAlNES GROOVING MACHINE Filed Nov. 21, 1933 4 Sheets-Sheet 2 mm h t A:

Sept, 1, 1936. w. M. HAINES GROOVING MACHINE 4 SheetsSheet 4 Filed Nov. 21, 1933 yneMHa Patented Sept. 1, 1936 UNITED (STATES PATENT" OFFICE Application .November 21,1933, Serial No. 698,994

I 4 Claims.

My invention relates to the grooving of'such articlesas rubber feed rolls for typewriters, adding machines, billing machines, and like paper handling devices. The roll is the subject-matter of my copending application Serial No. 698,993, filed the same day as the present a lication.

While the roll may be grooved in various ways and by various tools, I prefer that it begrooved by athin rotative abrasive disk, which is caused to engage the roll along a helical line by relative movement of the roll and disk toward each other along such a line. Since it is desirable to groove such rolls in one direction and then in the opposite direction, to make up conventional diamondshaped buttons on the periphery of the roll, the

machine should be such as will enable the accomplishment of grooving of this character with ease. I It is an object of-my invention, therefore, to devise a machine which is capable of performing the .grooving operation as indicated above, and which will dothe operation simply and quickly, and one whichhas the necessary capabilities for adjustment toregulate the depth of the groovathe pitch of the helical cut, and to accommodate difierent sizes of rolls, both as to length and diameter. While the'grooving operation may readily be performed quickly and easily by a hand-controlled operation, it is: a'further object ,to devise a machine of this character which shall be. automatic or semi-automatic. j It is a further object to devise a machine of the character described, which shall be simple in construction, and therefore inexpensive to con- 5mm; and which will be thoroughly reliable in 5' operation. v

My invention comprises the novel machine and the elements thereof, particularly residing in the arrangementofparts, to the accomplishment of the ends in View, all as will appear from thedraw- 'ings, this specification, and the claims at the end -cfthesame. 1 f 5 =t5 'In the accompanying drawings I have shown (45 my invention embodied in 'two forms oftmachine, 'one a manual machine, and the other a semiautomatic machine,'though it will be understood that the invention may take other forms within 'thescbpeof the claims, wlthoutdeparting from ;--5o-my invention. r

Figure 1 is a plan. view of the manual machine. a Figure 2is a section axiallypf the. spindle'in -'suchamachine. r w

igures 3 and 4 are cross sections on the respec- I5 tivelines 3-4 and 4-4 .of Figures 1 and 2.

Figure 5 is a perspective view of a roll, half of the grooving of which has been completed; that is, it is completely grooved in one direction.

Figure 6 is a similar view of the completely grooved roll, and Figure 7 is an end view thereof. 5

Figure 8 is a plan view of a semi-automatic form of my machine, illustrating the grooving in one direction, and Figure 9 is a similar view, with .parts broken away and shown in section, illustrating the machine at a difierent stage of the opera- 10 tion.

Figure 10 is a section on line Ill-l0 of Figure 8, and Figure 11 is a section on line H-H 'of the same view.

Essentiallyv my invention consists of a grooving tool-.9 which preferably is fixed in position, a spindle I which at one end supports the roll R to be grooved, and means (as typified by the double helical threador groove l 0) which will be described in detail hereafter, to accomplish rota- 20 .tional movement of the spindle simultaneously stance, of emery or carborundum. To this end it is shown as mounted upon the end of the shaft of a motor 90, which is fixed upon a base plate 9 I from which the spindle is also supported.

In order to permit the grooving of the rollto 35 be accomplished first in one direction and then in the opposite direction by the same mechanism, the spindle is mounted in a support 2 which is pivoted on the base plate 9| at 20, this point preferably being located immediately below and 4 in a vertical plane which includes the axis of the disk 9. The support 2 may be formed with a handle 2l,and adjustably positioned stops 22 at eachside of the disk: engage the support/2 and fix the spindle in such position that when it is advanced toward the rotary tool 9, grooves are cut inthe periphery of the roll, at the proper angle in either direction. By adjustment of .the istops 22 theangle of the helix may be varied as desired. 5

The spindle should be adjustable in elevation from the base-plate 9| to accommodate different diameters of rolls, and to this end a carriage 23 is guided at 24 in the support 2, though in effect forming part of the support, and is adjustable which are shown in the form of sleeves sure rounding the spindle, each has a key or keys 3| engageable in one of the grooves II), we keybeing engaged in the right hand groove and the other. in the left hand groove. ,Thesesleeves' however, v are not necessarily fixed against rotation, but are mounted both within a third sleeve 4, which in turn is rotatably mounted in a standard 21 form-- ing part of the member 23. The sleeve-4 may be,

circumferentially grooved, and is held against axial movement by means such as the set screw 40"(see Figure '2) received in suchgroove. It is provided with a' knurled hea d M by means of which it may be rotated, and in order to iii: the sleeve 4 in a plurality of definite positions spaced 'bydefinite-and preferably equal angular amounts, it may be provided with aseries of depressions 42, 'withinwhichfis engageable' a ball click 44.

For controlling axial movement of the spindle it may be providdwith a handle 'H 1 loosely mounted to rotate upon a screw l2 receivedin the outerend-oi thespindlej and asto-p'collar l3 may be'fitted on the'spindleto limit its longitudinal movement, and by adjustment of this the spindle'accommodates rolls of varying lengths. At'th'e end opposite the'han dle II the spindle maybe'reduced and tapered or provided with a tapered pin l5 which receives the tubular brass core of the rOIL-therubber which isto'be grooved 'asmayb'e seen in Figure 2, to the end that the sleeve 30 is unrestrained and is free "to r'otate within the sleeve 4.' Adjustments'for height and length,'itis assumed, have been previously made, and the support 2 is in the proper position to form a right hand groove 'on the roll. The handle II is grasped,fan'd the spindle is'pushed' axially toward the rotary disk 9.. The sleeve 3 being held by the screw 33 to the sleeve 4, and the latter being held in position bythe Click, the 'axial movement ofthe spindle accomplishes simultaneous rotary mov'e'ment'of the same as the roll, mounted on its end, advances to and past the grooving tool 9, engaging the periphery of the roll with the tool. Preferably it is immediately withdrawn, the grooving tool rakingthrough the groove'just cut and serving to clean it out. The head 4 [is now rotated to engage the click 44 with uthenext-of the depressions 42, thus rotating the sleeve 4 and with itithe sleeve 3 and the spindle I. The spindle may now be advanced again, cutting a second helical groove inthe roll; which is spaced a definite angular distance from the groove'first "zcut; and this operation-is repeated until the'iroll has b'enc'ompletely grooved withthevrequired number of righthand grooves. Now the support 2 is swung to the opposite side of they grooving toohagainst theopposite stop 22,:the setsc'rew 33 radial.

" best shown in Figure 7.

'direction :and in' this manner the -s'pindle'l is U 'recipro'catedfi j g a To accomplish automatic "shifting of the fric- "tionjclutch device a shift lever B iscQnnected to the sleeve 51' by One end, {and at its other end,

it into engagement.

previously described; A spring 13 serves tore- 'turnithe dog after disengagement of the stop is unscrewed, releasing the sleeve 3 from the sleeve 4, and the set screw 34 is screwed down to engage the sleeve 30 with the sleeve 4, and the operation is repeated, efiecting grooving of the roller in the opposite direction. 5

Figure 5 shows the roll R with the grooves 1' extending in the right hand direction, though it is evident that the left hand grooves might becut first. Figure 6 shows the grooves r intersected; by the left hand grooves r, andthe roll is com- 10 pleted. It will be evident that the grooving disk,

since itdoes not engage the roll at one point only, will 'undercut the buttons 1) which are formed on the periphery ofthe roll, thereby rendering these buttons somewhat more readily displaceable and 15 compressible than if the sides of the grooves were The undercut character of the grooves is Figures 8 to 11 inclusive the machine has 7 been converted into a semi-automatic machine. 20 In placeof the'hahdle I I- an arm l fi'is provided,

heldinplace by the screw l2, and incorporating the *motorffifl, through reductionjgears and bevel gears 56. The sleeve 5'! is held in each of twddefinite positions, axially of the shaft 5, by

such means asthe' ball click"58.- Engagement of the driving cone53"with the cone 5! a'clcom- 'plishes rotation of the shaft" 5 in one direction,

'while'enga'gem'ent of the driving cone 53"with the cone 52 rotates the shaft 5 in the opposite preferably through a spring 60, to anarni 6!, the

shank 62 'of which is slidably'received in a frame 4 member 63." Thi's'shank62'is' providedfwith a "slot 64, acrfoss'which are fixed spaced stop'collars '65 and SBQ'A pin ll carriedby the'arm 16 en'- gages these-stop collars stand 66 at the end of the "desired amount of tr'avel of the spindle I, audi thereby efiects shifting of the friction clutch, the

spring acting "asasnap-ov'er spring to accomplish' quick movement of the clutch, and to' press It is also necessary in amachin e of this 'semiautomatic character to provide means to rotate the sleeve 4, following the completion of each justable stop collar H which at theproper time engages witha block 12 pivotally connected to a shift lever 1 which acts as a feeding dog, engaging ratchet teeth formed on the head 4|", corresponding'in functionan'dlocation to the head 4| 565 Obviously the devices just described maybe varied widely, the essential feature being'the con-n accomplish advance and retraction of :the spindle,

and alsoto accomplish rotationofthe sleeve 4.

In the form described, rotation ofthe sleeven4 will occur following a grooving operation and return of the grooving tool through the same groove, but it is within the scope of my invention to rotate the spindle immediately following the grooving cut of the tool, and to efiect a grooving operation on the return movement of the spindle and roll.

What I claim as my invention is:

1. A machine for grooving rubber feed rolls and the like comprising a rotary grooving disk, a reciprocable spindle whereon the roll is securable, said spindle having two oppositely directed helical grooves, two keyed sleeves surrounding said spindle, the keys thereof engaging in different grooves, a support for said sleeves wherein they are freely revoluble, means to fix one sleeve or the other relative to said support, and said support being pivotally mounted to swing to opposite sides of the plane of said disk.

2. A machine for grooving rubber feed rolls and. the like, comprising a rotary grooving disk, a reciprocable spindle whereon the roll is securable, said spindle having two oppositely directed helical grooves, two keyed sleeves surrounding said spindle, the keys thereof engaging in different grooves, a third sleeve surrounding the two first sleeves, and wherein the latter are freely revoluble, means to fix one of the first two sleeves, or the other, relative to the third sleeve, and pivoted means supporting said third sleeve for swinging the same to opposite sides ofthe plane of said disk, said third sleeve being rotatably mounted in said support to rotate the relatively fixed sleeve and the spindle into a plurality of different positions.

3. A machine for grooving rubber feed rolls and the like, comprising a rotary grooving disk, a reciprocable spindle whereon the roll is securable, said spindle having two oppositely directed helical grooves, two keyed sleeves surrounding said spindle, the keys thereof engaging in different grooves, a third sleeve surrounding the two first sleeves, and wherein the latter are freely revoluble, means to fix one of the first two sleeves, or the other, relative to the third sleeve, pivoted means supporting said third sleeve for swinging the same to opposite sides of the plane of said disk, said third sleeve being rotatably mounted in said support to rotate the relatively fixed sleeve and the spindle into a plurality of difierent positions, and means automatically engageable to fix the third sleeve in positions spaced by definite angular amounts.

4. A machine for grooving rubber feed rolls and the like comprising a rotary grooving disk, a reciprocable roll-carrying spindle having two oppositely directed helical grooves, a support therefor, two oppositely directed keyed members rotatively mounted in said support, each engaged at all times in its respective spindle groove and adapted to rotate with the spindle and relatively to said spindle support, and means operable at will to fix a selected one of said two keyed members against rotation with respect to the support, for rotation of said spindle relative to such selected keyed member, and for rotation of the other keyed member relative to said support by said spindle.

WAYNE M. HAINES.

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