US1216784A

US1216784A - Horn for fastener-inserting machines.

Info

Publication number: US1216784A
Application number: US82985314A
Authority: US
Inventors: Stephen A Dobyne
Original assignee: CHAMPION SHOE MACHINERY CO
Current assignee: CHAMPION SHOE MACHINERY CO
Priority date: 1914-04-06
Filing date: 1914-04-06
Publication date: 1917-02-20
Anticipated expiration: 1934-02-20

Description

'S. A. DOBYNE.

HORN FOR FASTENER INSERTING MACHlNES- APPLICATION FILED APR. 6. 19M.

1,216,784. Patented Feb; 20, 1917.

2 SHEETS-SHEET l.

- [DIE v i'c If 2 14 z 74 I: gg 45 I 4-- 44 g5 73 '0 o Al f lib- I F Z5, Z 5 P s. DOBYNE. HORN FOR FASTENER INSERTING MACHINES.

APPLICATION FILED APR- 6, 914- v 1,216,784. Patented Feb. 20,1917.

. 2 SHEETS-wSHE-ETZ- STEPHEN A. DOBYNE, OF ST. LOUIS, MISSOURI, ASSIGNOR TO CHAMPION SHOE MACHINERY COMPANY, OFST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

HORN FOR FASTENER-INSERTIN G MACHTINE S.

To all whom it may concern:

Be it known that I, STEPHEN A. DOBYNE, a citizen of the United States, and residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Horns for Fastener-Inserting Machines, of which the following is a specification.

This invention relates to work supports,

and more particularly, to work supports or horns for fastener inserting machines.

A fastener inserting machine, especially when used in the manufacture of shoes, is provided with a horn, and this horn must be intermittently depressed during the feed of the work, and then released to permit the fastener to be driven. Since the thickness of the stock varies, the distance between the tip of the horn and the presser-foot necessarily varies as the fastener inserting operation is performed on the work. This requires means, having an adjustable connection with the horn, for depressing the horn.

" chine runs at a high speed, the wear and tear on these pawls and ratchets is very great, necessitating their constructions to be very heavy. V

The objects of this invention, therefore, are to provide work support controlling mechanism in which the parts are so constructed and relatively arranged, as to be capable of resisting the wear and tear during the operation of the machine; which will be simple in construction and positive, accurate, and effective in its operation.

Further objects will appear from the detail description taken in connection with the accompanying drawings, in which:

Figural is a longitudinal vertical section through a fastener inserting machine embodying this invention,

Fig. 2 is an enlarged section on the line 22, Fig. '1, showing the horn controllin mechanism in elevation,

Specification of Iietters Patent.

' j ustable nuts 21.

Patented Feb. 20, 1917.

Application filed April 6, 1914. Serial No. 829,853.

Fig. 3 is a side elevation of Fig. 2,

Fig. at is an end elevation of Fig. 3,

Fig. 5 is an enlarged section on-the line 5 5, Fig. 3, j

Figs. 6 and 7 are enlarged detail perspect1ve views, and, r

Fig; 8 is an enlarged section on the line 88,'Fig. 1. l v i Referring to the accompanying drawings, 10 designates a column having a machine head 11 thereon provided with fastener in serting mechanism, including a driver 12, and having a presser-foot 13.

A horn spindle 14 having a horn 15 thereon, is mounted to slide vertically in the col- 7 mum, and passes, at its lower end, through a sleeve 16. The'sleeve 16 slides in a bracket 17 provided with ears 18 clamped by bolts 19 to thecolumn. The horn spindle has a spring 20 bearing at one end against the sleeve 16, and at its other end against ad- The lower end of the spindle has a nut 22 thereon, abutting against a shoulder in the sleeve, and limitgig the upward movement of the horn spin- A bell crank lever is pivoted at 23 between the side members 24: on the bracket 17, and has one arm 25 thereof connected by a link 26 with the sleeve 16, and has the other arm 27 connected by a link 28 with the trea-" dle 29, Which treadle is pivoted at 30 in the base 31 supporting the column 10. A link 32 extends through the column and has a spring 33 thereon bearing at one end against the adjustable nuts 34 and at the other end against the column, this link being connected with the treadle so as to normally tend to hold the treadle in raised position. 7 The arm 25 and the link 26 form together a toggle, and the movement of this toggle is limited by an adjustable set screw 35 on the bracket 17. The rear end of the treadle has an aperture 36 therein, through which passes the end 37 of a clutch rod 38, having adjustable nuts 39 thereon to abut against the end of the treadle.

The construction of the mechanism so far described is substantially the same as shown and described in my co-pending application, Serial No. 820,216, filed Feb. 21, 1914. When the parts are in theposition shown in Fig. 1, with the treadle depressed and the toggle 25-26 straightened, the spring 20 will hold the horn in raised position, and this horn can be depressed by means of a horn controlling .mechanism, as .hereinafter dcscribed, When, however, the treadle is re leased, thetoggle will become broken, and the sleeve16, which forms an abutment for the spring 20, will drop, carrying the horn.

with it so as to permit removal of the work from the horn.

The horn spindle 14 has mounted'thereon a sleeve 40, provided with trunnions 41 carrying blocks 42, engaging the forked end 43 of a lever 44 pivoted at 45 in the column.

The other end of the lever is forked to support a block 46. This block is provided with ribs 47 engaging grooves in the lever, and has a part 48 extendingunderneath the lever and carrying segmental tooth members 49. Springs 50 are connected at one of their ends to pins 51 on' the block, and at their other ends to pins'52 on the lever, so as to normally move the block to the left,Fig. 3, the movement of the block being limited by the engagement of the block with shoulders 53 on the lever. V V

A bell. crank lever 54 is pivoted at 55 in the column, and has a slotted arm 56 through which passes a link 57 pivoted at 58 on the lever 44, connected to the horn spindle. A spring 59 on the link 57 bears V at one end against an adjustable nut 60 on the link, and at its other end against a washer 61 hearing against the arm 56.

nut 62 is mounted on the link on the opposite side of the arm 56. The other arm 63 of the bell crank lever 54 is pivoted to a link 64 which has pivoted at 65 a pair of spaced wedge plates 66 provided with teeth 67. These wedge plates are connected and spaced'at one end by the link 64, and at the other end by rivets or screws 68 and collars 69, so as to form, in effect, a single adjustable member. The inside faces of the wedge plates are providedwith guideway grooves to receive ribs 70 of a block 71. The block 71 is mounted on the reduced end 72 of a horn actuator or controlling rod 73, and is secured in position by a plate 74 and a nut 7 5. The horn controlling rod 73 is guided by lugs 76 on the column 10, and is actuated from a suitable cam 77 on the main drive shaft of the machine. 7

During the operation of the machine, the

cam 77 will intermittently move the horn controlling rod 73 up and down. This will, in turn, move the wedges 66 up and down, and these wedges will, upon the upstroke, first engage the tooth members 49, and then swing the lever 44 in the direction of the arrow, Fig. 1, to depress the horn against the tension of the spring 20, during the feed of the work.

Thereafter the rod'73 will a ain move down and permit the spring 20 to return the to raise its right-hand end. The movement downward of the left-hand end of the lever 44 will, however, swlng the bell crank lever v54 in the direction of the arrow, Fig. l, and

move the wedges 66 to the left, Fig. 1, there- 7 by, in efiect, raising the tooth faces 67 imme diately below the tooth members 49 an amount equal to that which these tooth members are raised by the swinging of the lever 44. The parts are so relatively proportioned that tor every thickness of work, and for every position of the horn, the vertical distance between the coiiperating

toothed members

46 and 66 is maintained uniform. For equal movements of the horn controlling rod (which has a constant vertical stroke or movement) the horn will, therefore, be depressed equal distances irrespective of the thickness of the work and of the positicn of the horn. .As the horn controlling rod 73 is moved upwardly, causing an engagement between the relatively

adjustable members

46 and 66 and lifting of the rear end of lever 44, the horn is depressed, and during the depression of the horn, these members are interlocked due to the interlocking or intermeshing of their teeth. During the depression of the horn, however, the left-hand end of the lever 44 will 'move downwardly, and since the bell crank lever 54 is at this time fixed against oscillating movement by the rod 73, the spring 59 will be compressed. As soon as the work is fed, and when the horn controlling rod 73 is depressed, the adjustable member 66 will move down until the horn is stopped by the engagement of the same with the work; then this adjustable member 66 moves down out of engagement with the coiiperating member 46, and the spring will then set the adjustable member 66 to the new position corresponding to the new thickness of work between the horn and the presser-foot. The adjustable member is, therefore, automatically set for the new thickness of work, the movement of this member being stopped by. the engagement of the arm 56 with the stop 62.

In certain positions of the parts, the teeth on the

cotiperating members

46 and 66 may not be in a. position to intermesh, and the points of the teeth may, in fact, be nearly opposite. The cotiperating members must, therefore, have a slight relative adjusting movement so as to move into mesh. The spring 59 furnishes a yielding connection for permitting such slight movement of the adjustable member 66 to the right, Figs. 1 and 3. In order, however, to permit an adjusting movement of the toothed members 49, the block 46, supportingthese members,

permit a slight adjusting movement in one trolling mechanism.

direction, but is stopped in the other direction. This construction permits the teeth to move into mesh, irrespective of the original relative position of these teeth.

This construction is ideal as a horn con- The adjustment for different thicknesses of stock can be made exceedingly fine, as the teeth on the cooperating members can be made comparatively fine, due to the fact that' 'there isa direct engagement of the teeth in a meshing direction, and there is practically no strain: along the teeth tending to strip them. These teeth will, moreover, always mesh, no matter how not depended upon to throw them into engagement, as is the case'with pa-wls and ratchets. In view of the direct meshing action of the teeth, stripping is entirely obviated.

It is obvious that various changes may be made in details of construction without departing from the spirit of this invention, and it is to be understood, therefore, that this invention is not to be limited to the specific details shown and described.

Having thus described the invention, what is claimed is:

1. In a machine of the class described, a longitudinally movable work support, alongitudinally movable actuator, a block 'arranged for adjustment along one of said parts and operatively connected with the other of said parts for movement thereby, a wedge member mounted behind said block for movement with that part along which the block moves, said member being adjustably movable perpendicularly to the line of movement of said block, and operative conas/nections for adjusting said member to compensate for movements of the block under variations in the thickness of the work, thus to maintain uniformity of movement of the support by said actuator.

2. In a machine of the class described, a longitudinally movable work support, a longitudinally movable actuator, a block arranged for adjustment along said actuator and operatively connected with said support for movement thereby, a wedge member mounted for movement with said actuator behind said block, said member being adapted for cooperation with said block and being adjustably movable perpendicularly to the line of movement of the latter, and operative connections for adjusting said member to compensate for movements of the block under variations in the thickness of the work, thus to maintain uniformity of movement of the support by said actuator.

3. In a machine of theclass described, a longitudinally movable work support, a longitudinally movable actuator therefor, a block and a Wedge member associated with one ofsaid parts and having cooperating engaging faces, said block being adjust-1 able: along {said part and said member being movable with said part behind said block andhaving an adjusting movement perpendicularly to the line of movement of the latter, and operative connections controlled by the'm'ovements' of' said support and actuator for moving said block along said wedge -supportingpart and for adjusting said wedge member to accord with such movement of the block, to compensate for variations in'the thicknessof the work and mamtaln un1form1ty of move- 7 V ment of the support by the actuator. rapid their relative movement, as a sprlng is 4. In a machineof the class described, a longitudinally movable work support, a longitudinally movable actuator therefor, a block and a wedge member associated with one of said parts and having cooperating toothed engaging faces, said block being adjustable along said part and said member being movable with said part behind said block and having an adjusting movement perpendicularly to the line of movement of the latter, and operative connections controlled by the movements of said support and actuator for moving said block along said wedge supporting part and for adjusting saidmember to accord with such movement of the block, to compensate for variations in the thickness of thework and maintain uniformity of movement of the support by the actuator.

5. In a machine of the class described, a longitudinally movable work support, a longitudinally movable actuator therefor, a

block and a wedge member associated with one of said parts and having cooperating engaging faces, said block being adjustable along said part and said member being movable with said part behind said block and having an adjusting movement perpendicularly to the line of movement of the latter, and operative connections controlled by the movements of said support and actuator for moving said block along said wedge supporting part and for adjusting said member to accord with such movement of the block, to compensate for variations in the thickness of the work and maintain uniformity of movement of the support by the actuator, said connections including a spring constructed and arranged to permit an inde-' pendent movement of said support and actuator. A I

6. In a machine of the class described, a work support, an actuator therefor, a pair of toothed engaging members, one connected with said work support and the other with sand actuator, means for connecting one of said members with said work support, constructed to adjust said member in accordance with the thickness of the work, and

means permitting relative adjusting movement of said member While moving into enand meanspermitting meshing of said teeth irrespective to the relative positions of said members.

8. In a machine of the class described a work support, an actuator therefor, a toothed member connected to one of said 20 members, a toothed wedge adjustably con nected to the other of said members, and a yieldable adjusting connection between said Wedge and said work support.

In testimony whereof I affix my signature 25 in the presence of these two witnesses.

STEPHEN A. DOBYNE. i/Vitnesses:

J. H. BRUNINGA, A. B. CREMER.

Copies of this patent may be obtained for five cents eachfby addressing the Commissioner of Patents, Washington, D. G.