US1140349A - Machine for use in the manufacture of boots and shoes. - Google Patents

Description

' A. BATES.

MACHINE FOR USE IN THE MANUFACTURE OF BOOTS AND suozs.

APPLICATION FILED JUNE 29, 1911.

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Patented May 25, 1915.

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MACHINE FOR USE IN THE MANUFACTURE OF BOOTS AND SHOES. APPLICATION FILED JUNE 29,1911.

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ARTHUR BATES, OE LEICESTER, ENGLAND, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MACHINE FOR USE IN THE MANUFACTURE OF BOOTS AND SHOES.

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Application filed June 29, 1911.

, ings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for use in the manufacture of boots and shoes and is herein shown as embodied in a machine which is especially adapted for operating along the margin of the sole of a boot or shoe.

The particularly to invention relates means for controlling the speed of operation of such machines, especially when the machines are provided with means for automatically feeding the work between successive operations.

Up to the present time, machines which operate along the margin of boot or shoe soles have been arranged to operate at a speed which will permit the work to be handled satisfactorily when operating around the more curved parts of the sole, such as the toe. Although the work may be fed advantageously at a higher rate of speed when operating along the straight, or comparatively straight, sides of a boot or shoe, it will be apparent that when a single speed only is provided in a machine of this type that speed must be suited to the requirements of the more difficult portions of the work. As a consequence, the possible capacity of such machines has been very much curtailed.

An object of the present invention is to facilitate the operation of machines of the aforementioned type by providing means for accelerating or retarding the speed of the machine to suit the requirements of different portions of the work upon which the machine is operating. hen the machine is used to operate along the margin of a boot or shoe sole, this acceleration of retardation of the speed of the machine may conveniently be so arranged that when operating around the sharply curved portions of the sole, as, for example, about the toe portion, the work may be fed at a comparatively low rate of speed and when operating Specification of Letters Patent.

Patented May 25, 1915.

Serial No. 636,009.

along the less curved or straight portions of the sole the speed of the machine may be accelerated.

A further object of the invention is to provide a machine in which the control of the speed of operation of the machine or the speed of the movement of the work past the mechanism which operates upon the work may be automatic. In the preferred embodiment of the invention the automatic control of the variation of the speed is preferably effected through connections with the work support, whereby the variation in the position of the work support, as different parts ofthe work are presented to the machine, effects a variation in the speed of operation of the machine or in the speed of the movement of the work which will suit such speed to the difficulties presented by variations in the contour of the work.

As herein shown, a convenient embodiment of the invention comprises the combination, in a machine for performing successive operations around the marginal portions of the bottoms of boots or shoes, of a work support or horn, and means controlled by the turning of the work support to change automatically the rate at which the successive operations are performed according to the requirements of the work. It will be understood, however, that the invention is not restricted to a work support that turns.

In the use of the machine arranged as above set forth the straight side of the boot or shoe may be first presented to the nailing, sewing, or similar devices, the operation on the boot or shoe being performed with rapidity. When the curved too is reached in the progress of the work the slower rate of movement of the operating devices will be substituted automatically for the more rapid rate of movement so that the operation around the toe part will be effected comparatively slowly. As soon as the other straight side of the boot or shoe is reached the more rapid rate of movement of the operating devices will be reestablished.

In combination with the means for auto- F changing means inoperative whereby the V motion of the said devices may be maintained at a uniform speed when so desired. In this connection the arrangement may'be such that on starting the machine the slower rate of motion will first be employed. This slower rate of motion can then be maintained. throughout the entire operation on the boot or shoe or the automatic changing means may be put into operation so that the rate of motion of the operating devices will thereafter be made subject to the change in the curvature of the work and thus be relatively fast or slow according to the part of the work being dealt with.

According to the embodiment of the invention hereinafter described, the rotatable work support or horn actuates a cam that is adapted through connections to control a variable gear. When the horn is turned into difierent positions to accommodate the work the cam will, through the intermediate connections, so control the variable speed gear as to bring into operation the speed most suitable for the part of the work being operated upon. The shape and extent of the acting surface of the said cam will determine when the slower rate of motion of the operating devices is put into action and thelength of time it is maintained in action, this time, of course, varying with the size and shape of the toe that is being treated. Obviously, by having interchangeable cams of different sizes and shapes variation can be obtained in both the period at which the slower rate of motion comes into effect and in its duration in action.

In the accompanying drawings,Figure 1 is a side elevation of a fastening inserting machine having embodied therein the present invention; Fig. 2 is a detail view, on an enlarged scale, of the variable speed mechanism, and Fig. 3 is a sectional view showing the construction of the brake band by which the changes in speed are controlled.

The machine shown in the drawings comprises a standard 2, a work support or horn 4,and a head 6, and is of the type known as loose nailing machine, the illustrated machine being more fully described in United States Letters Patent to Louis Goddu, No. 490,624, dated January 24, 1893. The machine described in the said Letters Patent comprises among other things means for supplying nails to an inserting mechanism, means for inserting nails into work supported upon the horn 4, and means for feeding the work between the successive nail inserting operations, said feeding mechanism comprising an awl 3 carried by an awl bar 5 which is arranged to move vertically in theswinging head 7 to force the awl into the work and to move laterally with said head 7, as it swings, to cause said awl to feed the Work, all as more fully shown and described in said Letters Patent above-identitled. The horn 4 is arranged to turn as .thework is fed past the inserting mechanism, particularly when operating around the toe end of a boot or shoe. The various mechanisms are driven from a main driveing shaft 8 upon which iscarried the variable speed mechanism hereinafter to be described. A treadle (not shown) controls the operation of the machine, the rod 10 being connected to the said treadle. Rigidly connected with the shaft 8 is one member 12 of a friction clutch. The other member 14 of this clutch is mounted upona sleeved eX- tension 16 of the hub 18 of a brake disk 20 and is connected normally to the hub of a loose pulley 22 by a roller clutch 24 so arranged that the part 14 normally turns with the loose pulley 22 butmay turnfaster than the loose pulley 22when occasion demands. The clutch member 14 may be moved into engagement with the clutch member 12 by means of a wedge 26 which operates be tween the hub of the brake disk 28 and a collar 30 upon the shaft 8, said wedge havagainst the bottom of a socket 36 in alink Q 38 connected to the wedge 26. Ball bearings 39 are provided between the end of the clutch member 14 and the end of the brake disk 20. i

The loose pulley 22 is provided with shafts or studs 40 uponwhich are mounted bevel pinions 42 in gear with two bevel wheels 44 and 46, situated one 011 each side of the said pinions. One of these bevel. wheels '44 is formed integral with the clutch member 14 and the other, 46, is formed integral with the brake disk 20. The hub 48 of theclutch member 14 is shaped to form a bearing for the loose pulley 22, and, as hereinabove pointed out, is itself mounted upon the sleeved extension 16 of the hub 18 of the brake disk 20. A brake band 50 surrounds the brake disk 20 and when this brake band is loose and the parts are in the position shown in Fig. 2, the loose pulley 22 and its associated parts, the bevel wheels 44, 46, the clutch member 14 and the brake disk 20, will rotate as a whole'upon' the driving shaft 8. If'now the wedge 26 be raised by the treadle to move the clutch member 14 into engagement with the clutch member 12, the shaft 8 will be turned with the pulley 22, by reason of the roller clutch connection 24 between the clutch member 14 and the pulley 22, at the lowest speed provided. If it be desired to increase the speed of rotation of the shaft 8, the brake band 50 will betightened upon the brake disk 20, thereby causing the pinions 42 to turn upon the bevel wheel 46' and to transmit their movement to the bevel wheel 4 1. If the brake band 50 be tightened upon the brake disk until the brake disk 20 is brought to a stop, it will be obvious that the bevel wheel ea will be turned at twice the speed of the loose pulley 22, which is the highest speed provided in the construction shown. If the brake band operates only to retard the movement of the brake disk 20 but does not bring it to a stop, the bevel wheel it: and consequently the shaft 8 will be turned at a speed intermediate between the lowest speed and the highest speed.

In order that the change from one speed to another may take place at the proper time in the operation of the machine on a boot or shoe, the variation of speed is preferably controlled automatically by the turnine, of the horn 4:. To this end, the horn 4 is mounted on a carrier 52 which is adapted to turn upon the horn post 5%. Depending from the carrier 52 is an extension 56 provided with a cam surface 58 which is adapted, in the rotation of the horn, to actuate a rod 60 arranged to slide in the machine frame. The rod 60 is provided with an antifrict-ion roller 62 which bears against the cam surface 58. A spring 64 surrounding the rod 60 within the machine frame tends to maintain the roller 62 in contact with the cam surface 58.

The other end of the sliding rod 60 is connected to one arm of a bell-crank lever 66 which is fulcrumed at 68 upon an extension 70 of the machine frame. The second arm of the bell-crank lever is connected by a link 72 to one arm of another bell-crank lever 7 4c fulcrumed upon a rod 76 in the upper part of the machine frame, the other arm of the last-mentioned lever being connected with one end of the brake band 50 that surrounds the brake disk hereinabove referred to. The other end of the brake band 50 is secured by a clip 78 to the rod 76 upon which the bell-crank turns. By this arrangement when the link 72 connecting the two bell-crank levers 66 and 7% is raised the upper bell-crank 7% will be turned on its pivot, the band 50 will be tightened on the brake disk 20, and the turning of the brake disk 20 will be retarded or stopped.

The treadle rod 10 which operates the wedge 26, hereinabove referred to as shifting the variable speed mechanism to cause the clutch member 1% to engage the clutch member 12 whereby the loose pulley 22 is connected to the shaft 8, is provided with a collar 80 which, by means of a cam 82, moves a lever 8 L fulcrumed at 86 upon the extension 70. This lever will be hereinafter referred to as a stop lever. The stop lever 84 is provided with a roller 88 that is adapted to intercept or engage at times a cam face 96 formed on an extension of that arm of the bell-crank lever 66 to which the sliding rod 60 is connected. The cam face 90 is so shaped that when the treadle is only slightly depressed the machine may be started while the roller 88 of the stop lever 84 is in such position that it will prevent the bell-crank 66 and with it the rod 60 from responding to the variations in the shape of the cam surface 58 of the horn carrier 52. A further depression of the treadle, however, will lift the treadle rod 10 and will move the roller 88 and the stop lever 8i out of engagement with the cam face 90 on the extension of the bell-crank 66 and thus permit the cam surface 58 of the extension 56 of the horn carrier 52 to operate the bellcrank lever 66 through the sliding rod 68. As hereinabove pointed out, the connection of the treadle rod 16 with the wedge 26 is through a yielding or lost motion connection, 32, 3%, 36, so as to permit the further movement of the treadle rod 10 to lift the stop lever 8- The shape or extent of the cam 62 on the extension of the horn carrier 52 will determine when the slow motion is to be put into action, and the length of time it is in action, this varying, of course, with the style and shape of the toe which is being operated upon.

In the operation of the construction herein shown, the workman starts along the side of the boot or shoe and by depressing the treadle to a greater or less extent he can determine at his own discretion which speed the machine will employ. It is intended, however, that the treadle shall be put down to its full extent and the machine used to its full speed along the side of the shoe, As it is necessary to rotate the horn and with it the cam 58 when the horn is in the toe of the shoe, the machine is so arranged that at such times the sliding arm 60 will be actuated by the cam 58 on the carrier and thereby, through the bell-crank levers 66 and 74 and connecting link 72, throw the band brake 50 out of action to reduce the speed of the machine while the toe is being operated upon. When the horn 4 is swung again into its crosswise position for operating upon the side of the boot or shoe, the reverse action will take place and the high speed gear will then be engaged by the sliding rod 60, bell-cranks 66 and 7%, link 72 and band brake 50, the latter being tightened upon the brake disk 20 through the action of the cam 58 upon the horn carrier 52 and interniediate connection.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. In a machine of the class described, means for operating upon a boot or shoe, means for automatically varying the speed of operation as different portions of the boot or shoe are presented to the operating means,

and means under the control of the operator and operable While the machine is in operation for varying the action of said automatic means.

2. In a machine of the class described, mechanism for operating upon a boot or shoe, means for automatically varying the speed of operation of said mechanism as different portions of the boot or shoe are presented to said mechanism, and means under the control of the operator and operable as the machine is actuated for selectively determining the initial speed of operation.

3. In a machine of the class described, mechanism for performing successive operations upon a boot or shoe, means for feeding the boot or shoe between the successive operations to present successive portions thereof for the successive operations, and means acting automatically to vary the speed of operation of the operating mechanism as different portions of the boot or shoe are presented to said mechanism, said means being arranged to effect a corresponding variation in the speed of operation of the feeding means.

4. In a machine of the class described, mechanism for performing successive operations upon a boot or shoe, means for automatically varying the rate at which the successive operations are performed as different portions of the boot or shoe are presented to the operating mechanism, and means for rendering said mechanism operative or inoperative having provision for preventing, at the will of the operator, the automatic variation of the rate of operation, While permitting the mechanism to continue in operation.

5. In a machine of the class described, mechanism for performing successive operations upon a boot or shoe, a work support arranged to turn as successive portions of the work are presented to said mechanism, a cam arranged to turn with said work support, and means operated from said cam for varying the rate at which the successive operations upon the Work are performed.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

ARTHUR BATES. I

Witnesses:

'Inos. H. Goon, HORACE BUNN.

G'opies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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