US1373490A - Machine for inserting fasteners - Google Patents

Description

J. F. DAVEY.

MACHiNE FOR INSERTI NG FASTENERS.

APPLICATION FILED OCT 22.19r7.

1,373,490. Patented Apr. 5, 1921.

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O E o l J 9 1/ v%fi J. F. DAVEY. MACHINE FOR INSERTING FASTENERS.

APPLICATION FILED OCT 22 1917- 1,373,4L9O. Patented Apr. 5, 1921.

2 SHEETS-SHEEI 2.

UNITED STATES r orrics.

JOHN F. DAVEY, 0F BEVERLY, MASSACHUSETTS, ASSIGNOB, BY MESN E ASSIGNMENTS TO UNITED SHOE MACHINERY CORPORATION, 01* PATEBSON, NEW JERSEY, A COR 'PORATION OF NEW JERSEY.

MACHINE FOR INSER'IING FASTENERS.

Specification of Letters Patent.

Patented Apr. 5, 1921.

Application filed October 22, 1917. Serial No. 197,888.

T 0 all w from it may concern Be it known that I, Jorm F. DAVEY, a citizen of the United States, residing at Beverly, in the county of Essex and State of lilassachusetts, have invented certain improvements in Machines for Inserting Fasteners, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

T his invention relates to machines for inserting fasteners, such as eyelets, lacing studs, or the like. The general object of the invention is to provide an improved machine of this type.

Duplex machines for inserting eyelets or the like are well known and are commonly used for inserting two fasteners substantially simultaneously in the opposed edges of a garment thereby insuring exact alinement and providing great machine capacity. One well known embodiment of this sort of machine is illustrated in Letters Patent No. 934,066, granted Sept. 1. 1909 on an application of George Goddu. In machines of this type two pieces of work are superposed and two independent punches and sets, oppositely disposed and associated with interposed,

punch plates and upsetting dies, are provided. These punches and sets are mounted in a pivoted forked head frame which is moved angularly to feed the work. With a short spacing between successive eyelets, the deviation from a straight line caused by this angular feeding movement may not be important but frequently successive eyelets are so widely spaced that it is impossible to set them in a straight line. Various constructions, involving more or less complicated mechanisms, havebeen devised for the purpose of overcoming this difficulty.

An object of this invention. is to provide a simple and otherwise satisfactory fastener inserting machine by the use of which this and other difficulties may be eliminated.

A feature of the invention consists in a machine with a tool-carrying head mounted for right line sliding movement in two angularly related directions. Vvith such a head having independent tools acting respectively as a punch and a set the work will always be fed in a straight line by one of the tools and the head carrying the a sliding tool-carrying frame having oppositely disposed tools and an interposed cooperating abutment arranged so that the alinement of these parts is absolutely assured.

Still another object of the invention is to provide improved mechanism for moving the tools endwise toward and from the work. This movement is effected according to the present disclosure, as in prior constructions,

cams. In some former constructions there is a pivotal connection between the tool and its operating lever, or two pivotal connections when a connecting link is interposed between the tool and thelever, and the heavy stresses have been transmitted by such pivotal connections with varying degrees of accuracy. since they increase the number of wearing parts upon which accuracy depends. In other former constructions the operating lever has acted directly on one end of the tool as a hammer acts on a nail, but since that mode of action is not effective to retract the tool a spring has been provided to return the tool to its initial position' In high-speed machines springs are not wholly satisfactory because they do not overcome inertia of the tools so promptly as to keep pace with the retraction of the hammers. A noisy and wearing impact of the tool against the hammer is one objectionable result of such construction.

W ith a view to obviating the disadvantages set forth in the last paragraph an object of the present invention is to provide an improved connection between a tool and its hammer by which the tool will be maintained oositivelv in abuttin contact with.

the relatively heavy operating stresses. Furthermore,v according to the illustrated mechanism, a feature of the invention con sists in providing for lateral movement of the tool relatively to the hammer s that the aforesaid connection will be maintained at all times.

Further features of the invention will become apparent after a consideration of one particular embodiment of the invention as described in the following specification taken in connection with the accompany drawings, in which,

lever 18 similarly arranged as in the Goddu Patent No. 934,066 by means of'which the driving pulleyis disengaged from the main shaft at the completion of a cycle of operations.

Supported upon the main framev is an auxiliary frame 20 carrying the sliding head 22 upon rods24; and 26 supported in brackets'on the auxiliary frame 20. Mounted in the sliding head 22 and projecting forwardly therefrom are studs 28 and 29 which act as supports for a forked frame 30. This frame 30 is provided wlth arms 32 and 34 a which are constructed at their encs to form heads 36 and 88 for supporting the operatmg tools. As 1s customary in this type of machine, these tools comprise oppositely disposed punches 40 and 42 and oppositely disposed sets 44 and 46. The forked frame 30 is also provided with an intermediate lug 4:8 for supporting the anvil or die plate 50 which is provided with the usual punch block 52 and upsetting die 54. The detailed construction of the operating ends of the punches and the sets and the coacting punch and upsetting die form no part of this invention and may be of any usual and convenient construction. it will he noted,

however, that the construction of the frame 30 insures theexact alinement of the oppositely disposed tools with one another and with their co-actmg abutments such as the punch block and upsetting die.

Movement of the forked frame 30 back and forth in order to bring the punches and sets successively into operative position may be effected by means of a link 56 suitably mounted in lugs 58 on the main frame so as to be capable of back and forth sliding movement but restricted against lateral movement. One end of this link is provided with a roller engaging in a grooved cam 60 mounted upon the mainshaft 12 while the other end of the link engages a stud 62 upon the frame 30. The cam 60 is suitably designed and timed to cause the desired sliding movement, necessarily in a straight line, of the forked frame 80 to bring the punches and sets to operative position successively. Lateralmovement of the frame 30 with respect to the link 56 is allowed bythe length of the pin 62 which is so designed that the link 56 may not become disengaged'therefrom during such movement.

The feeding movement of the sliding head 22 and hence of the tool carrying frame 30 may be effected by any suitable mechanism. F or the sake of illustration, there has been shown in 1 an arrangement essentially similar to that shown and described in the Goddu patent, above-mentioned, and consisting of; a cam 64 and a pivoted lever 66 which is connected by means of links 68 and- 70 to the frame 30. The links 68 and 70 are pivotally joined within the of'a U- shaped link 72 which is pivoted upon a post 74 upon the hand lever 76. This lever 76, which is pivoted atits rear end to the quadrant plate 82, is normally urged to the right by means of a spring '78 against an adjustable pin which may be inserted'in any one of a number of holes in the quadrant plate. When the lever 76 is at the right hand side of the quadrant, the post'7 1 constituting the pivotal center of the link 72 will be in a position in which the link 72.

will guide the pivot point of the links 68 and 70 in an arc extending more or less transversely to the direction of the feeding movement of the frame 30, and a greater component of the movement of the pivot point of the links 68 and 70 becomes lost the nearer the lever 76 is to the right-hand side. Thus the extent of the feeding movement can be varied by adjusting the lever '7 6 in a well understood fashion. 1

' Eyelets may be supplied to the opposing sets from a hopper 8 1 pivoted at 86 and provided with raceways 88. This hopper and the raceways are moved back and forth by means ofa bell crank lever 90 actuated by a cam 92 upon the mainshaft 12. A handle 94 is provided for shifting the center of the bell crank lever 90 when it is desired to throw'the' eyelet delivering means out of operation and is a usual arrangement which forms no part of the present invention. The

an usual mechanism may be employed for agitating the eyelets within the hopper and in the illustrated embodiment such an arrangement is indicated as driven by means of a belt and pulley 96 from the main shaft.

The depression and retraction of the operating tools is effected by means of levers pivoted upon pins 100 and 102 in the auxiliary frame and actuated by means of a cam 10% upon the main shaft. Levers 106 and 108, which are articulated at 107 as shown in Figs. 2 and 3, are connected to the punches 40 and 42 while similarly articulated levers 110 and 112 are connected to the sets 44 and 4.6. The upper levers 106 and 110 are provided with pivoted extensions 11 i and 116 respectively, and the extensions carry rollers 118 for engagement with the cam 10 1. The inner end of each extension, see Fig. 3, is rounded and arthe machine has been running idly and several eyelets have been delivered to the sets, this stiff spring 128 will avoid a breaking of the parts such as might otherwise result.

The means for connecting each of these levers to its respective tool in order to allow for the back and forth movement of the heads 36 and 38 to shift the tools to and from operative position and for the lateral feeding movement of the frame is of par-- ticular importance and is similar for each of the levers. The outer end of each of the operating tools is provided with a rounded portion 130 which is maintained in engage ment with the rounded surface of a hardened steel block 132 affixed to the lever and shown as being dovetailed in the end of the lever. Each of the tools is provided with a laterally extending pin 1341 which is arranged to bear and to slide in an elongated sleeve 136 carried by a link 138 pivoted to the outer end of the lever. By means of this link, the rounded portion 130 is held in engagement with the rounded surface of the block 132 whenever the tool is transmit ting pressure from the lever to the work or to an eyelet, as the case may be. Fu ther, telescopic connection of the pin 134. and sleeve 136 is maintained during the feeding movement of the frame by reason of the length of these parts.

By properly designing the controlling cams upon the main shaft any desired sequence of operations may be obtained. In the illustrated embodiment, the sequence of operations is the same'as in the machine illustrated in the Goddu Patent No. 93 1,066. Accordingly, the punches first advance and .actin g punch two holes in opposite sides of the upper or other work and are then positively retracted by their levers 106 and 108. The forked frame 30 is then drawn back in a straight line, sliding on the studs 28 and 20, by the link 56 so as to bring the sets 421 and 416 into operative position. These sets are then depressed by their levers 110 and 112 to enter the eyelets presented by the eyelet-chutes whose outer ends are at that time in alinement therewith. As the sets continue to advance, the eyelet chutes are withdrawn rearwardly and, by virtue of engagement of the rounded surfaces of the bloc-ks 132 with the rounded portions 130 of the outer ends of the sets, the setting motion is impartcd to the setting tools without imposing any stress on the links 138 or their pivot pins. The sets'are then slightly withdrawn to relieve the pressure of blocks 132 upon the heads 130, and forked frame 30,

carried upon the sliding head 22, is moved to the left by the lever 66 working through the links 68 and 70. Because of the arrangement of the sliding head, this feeding movement must necessarily be in a straight line and in a direction angularly related to the direction of the back and forth movement of the heads 36 and 38.

Having now described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. in a machine for inserting fasteners, a frame carrying an operating tool and a coabutment in positive alinement, for supporting and guiding said frai. c for sliding movement in a straight line in one dir on to bring the tool into an d out of operative position, and means for moving said frame in an angularly related direction to effect a feeding movement of the work.

2. in machine for inserting fasteners, a frame carrying supplementary depressible toclsand co-acting abutment for said tools maintained in rigid alinement therewith, means for supporting and guiding said frame for slidir movement in a straight line in one di non to bring either tool to op rative pos ion. and means for supportand guiding said franc for sliding 1110\(1118l1-..- relateddirection to feed the work by the eng?" gementof a tool with the work.

3. in a machine for inserting fasteners, a slidahle suporting frame, a slidable toolframe 0 thereby and arranged to slide relatively thereto along lines atright-angles to the lines of movement of the supporting carriage, oppositely disposed tools carried in a straight line in an singularly ment as aforesaid to locate the tools for op eration on the work and to feed the latter.

l. In a machine for inserting fasteners, a forked framecarrying oppositely disposed pairs of supplementary depressible tools and a coacting abutment for said tools maintained in rigid alinement therewith, means for supporting and guiding said forked frame for sliding movement in a straight line in one direction to feed the work by virtue of the engagement of oppositelydisposed tools therewith, and means for supporting and guiding said forked frame for movement in an angularly related direction to move the pairs of opposite tools into and out of operative position.

5. In a machine for inserting fasteners, a forked frame carrying oppositely disposed depressible tools and a co-acting abutment interposed between said tools, all of said parts being maintained in rigid alinement, means for supporting and guiding said forked frame for sliding movement in one direction to move said tools into and out of operative position, means for supporting and guiding said frame for sliding movement in a straight line in an angularly related direction to feed the work by virtue of the engagement of the tools therewith, and articulated operating levers for said tool's arranged to depress the tools with equal pressure against opposite sides of the abutment. V

6. In a machine for inserting fasteners, a movable frame carrying a tool and a co-acting abutment positively maintained in alinement therewith, said frame and said tool being relatively movable to effect an operative movement of the tool, means for moving said frame in straight lines in angularly related directions to bring the tool into and out of operative position and to feed the Work, an operating member for said tool arranged to depress and retract the same but maintained against movement with said frame, and means for continuously connecting said member and said tool in all of the positions of the tool;

7. In a machine for inserting fasteners, a pair of tools arranged in alinement for simultaneous operation upon two pieces of Work, means for moving said tools back and forth in a direction at an angle to their direction of operating movement, pivoted operating levers engaging said tools arranged to move them axially to insert fasteners, and means for connecting said levers to said tools arranged to permit the back and forth movement of the tools without disturbing the engagement between the levers and the tools.

8. In a machine for inserting fasteners, successively operating tools, means for supporting said tools movable to bring them alternately into operative position, independent levers for depressing and retracting said tools arranged in engagement with a portion of the tools, and means for connecting the tools to the respective levers in all positions of the tools constructed and arranged to maintain said engagement.

9. In a machine for inserting fasteners, a movable frame carrying a pair of supplementary depressible tools, means for moving said frame in two angularly related directions to bring the tools successively into operative position and to feed the work, independent members for depressing said tools, engaging a portion thereof, and means for connecting said members to said tools in all of the positions of the frame constructed and arranged to maintain said engagement of members and tools during the movement in a direction angularly related to the direction of feeding movement and to restore said engagement after the feeding movement.

10. In a machine for inserting fasteners, a movable forked frame carrying pairs of oppositely disposed tools, an interposed abutment, means for moving said frame in two angularly related directions, pairs of interconnected levers for controlling the op eration of oppositely disposed tools, and means for continuously connecting each lever to its associated tool in all positions of the frame constructed and arranged to main tain the levers and tools in engagement during the operating movement of the levers.

11. In a machine for inserting fasteners, a tool carrying frame mounted for right line movement of all its parts to feed the work and movement in another direction to bring the tool into and out of operative position, means for imparting the feeding movement to the frame, and cam operated means for moving the. frame to bring the tool into and out of operative position, said means being held against movement in the feeding direction and constructed and arranged to be continuously connected to the frame.

12. In a machine for inserting fasteners, a frame carrying a pair of depressible successively acting tools, means for moving said frame backand forth to bring each tool into and out of operative position, inclependent levers for the tools connected thereto by a link, and curved bearing surfaces upon the ends of the levers and the heads of the tools arranged. to maintain continuously an engagement between the heads of the tools and the ends of the levers during the aforesaid movement of the frame.

13. In a machine for'inserting fasteners, a reciprocating tool having a head portion adapted for engagement by an operating lever, means for moving said tool back and forth to bring it into and out of operative position, said lever having a portion shaped for engagement with the head portion of the tool in all back and forth positions, and means connecting the lever and the tool arranged to maintain this engagement.

14:. In a machine for inserting fasteners. a tool-carriage a tool carried thereby and movable relatively thereto toward and from the work, the carriage being movable transversely of such relative movement of the tool to shift the tool laterally, tool-operat-' ing mechanism including a hammer relatively to which the tool is moved in consequence of being shifted laterally by the tool-carriage, said hammer being arranged to move the tool toward the work by direct contact with the tool, and tool-retracting means connecting the tool positively and continuously with the hammer so as to insure the aforesaid direct contact of the tool and the hammer when the latter is actuated to move the tool toward the work.

15. In a machine for inserting fasteners, a reciprocatory feed-carriage and guiding means arranged to constrain the same to rectilinear movement, a tool-carriage carried by said feed-carriage and arranged to be movable relatively thereto in lines substantially transverse to the path of the feedcarriage, and coijperative work-engaging tools carried by said tool-carriage and arranged to partake of the rectilinear movement of the feed-carriage, one of said tools being formed and arranged to feed the work in consequence of being moved by the feedcarriage as aforesaid.

16. In a machine for inserting fasteners, a tool, a hammer arranged to move the tool endwise, means for moving the tool sidewise relatively to the hammer, and a link pivotally connected to the hammer and to the tool so as to partake of sidewise movement of the tool, the hammer and tool having surfaces formed and arranged to hear one on another to sustain the full force of the hammer when the latter is actuated to move the tool toward the work.

In testimony whereof I have signed my name to this specification.

JOHN F. DAVEY.

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