US1447244A

US1447244A - Machine for inserting fastenings

Info

Publication number: US1447244A
Application number: US278695A
Authority: US
Inventors: Goddu George
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1919-02-24
Filing date: 1919-02-24
Publication date: 1923-03-06
Anticipated expiration: 1940-03-06

Description

Mar. 6, 1923.

G. GODDU MACHINE FOR INSERTING FASTENINGS l m h w m 2 w 6 85 21 w 222M 3 w w M 1 44 5 2 Filed Feb.

Mar. 6, 1923.-

G. GODDU MACHINE FOR INSERTING FASTENINGS 2 sheets-sheet 2 Filed Feb. 24, 191

Fig.3 [l2 enonen comm, or W NCHESTER, AssacnUsErrrs, assimsma To VUNITED snon MACHINERY CORPORATION, or EATER-SON, new JERSEY, A conronnrron on NEW JERSEY.

:MACHINE "roe INSVERTINVG FASTENINGS.

Application filed February fl, 1919. Serial No. 278,695.

To all whom it may concern:

Be it known thatI, GEORGE State of Massachusetts, haveinvented 'cer tain Improvements in Machines forInserting Fastcnings, of which the following-description, in connection with the accompanying drawings, is a specificatiomfilike reference characters onrthe, drawings :indi-- eating like parts in the several figureslj serting fastenings, and, by way (of-illustration, is herein shown as embodied mamachine for inserting. screw-threaded fasten-j pended while-a finished, .piece of work is beingremov'ed from the machine and a fresh piece substituted therefor and frequently.

during operation on a single piece-of work. The screw-threaded wire from which the fastenings are formed is thrust into the work by a wire carrying spindle which. communicates its motion to the other operating parts of the machine. The spindle is oper:

ated at high speed, and both the spindle and the operating parts driven by it are heavy. Consequently, their momentum is such that quick and frequent stopping of the machine would cause excessive wear and breaka e of its elements, thus making it impractlcab e to discontinue the operation'of the entire: machine whenever it 1s necessary to suspend 1 the insertion of fastenings. The machine is, therefore, operated continuously, the :insertion of fasteningsbeing suspended when desired by maintaining the wire feeding-mechanism out ofengagement with its actuator by manually controlled means. Inasmuch as there is no certainty as to the timeinthe cycle of operations-of the machine when the manually controlled means will be actuated,

the manner of engagement of the wire feeding means with its continuously moving actuator upon the resumption ofthe insertion of fastenings may be'such asto cause a fastening shorter than the proper'length for a giventhicknes's of work to be inserted or the Gonnn, a izen of the UnitedSta'tes, residing atWmmachinemay fail entirely to insert a fastenmg in the first fastening location. Various vide satisfactory mechanism for suspending the insertion of the fastenings but so far as known, none of these mechanisms have gone 111tOugQIleI'fll use, due, largely, to the added expense involved in. embodying them in the machine.

One of the objects of this inventionis to provide mechanism which will insure that This invention relates to machines for-1n the'first'fastening insertedupon the initiaattempts have heretofore. been vmade to. pro

tion of the insertion of fasteningswill be of full length, .which will be efficient and reliable in operation, and which will, at the same time, be simple in construction and readily applicable to such machines as at present constructed and consequently capable of being embodied in the machines at a low cost. Preferably,the mechanism is so "constructed and arranged as to cause the feeding means to engage its actuator substant-iallly at the beginning "of a-cycle of operations of the machine Whichends'with the severance of thesection'of the wireinserted inthe work from the wire. An important feature ofthe invention resides in the provision of manually operated meansfor suspendingithe insertion of fastenings and means for automatically control llIlg' the operation of the manually operated means so as to cause the insertion of fastenings to be resumed at the appropriate time inthe cycle of operations of the machine. Preferably, the manuallyoperated means comprises a member operable when in one position to render thewire feeding means inoperative and movable from such position to cause the machine again; to feed the wire,

the member being normally precluded from i v such movement by a stop interposed in its path of movement and operatively connected with the wire severing means. In machines of said type the work support is raised to work clamping position by a treadle, and heretofore the construction of the machine has been such that the work support droppedimmediately upon the re lease of "the treadle. Inasmuch as the treadle might be -released by the operator at any time in the cycle of operations of the machine, the work support was liableto be lowered before the last fastening desired was i completely inserted.

Another object of the invention is to insure that the work support will not be lowered until the last fastening has been completely driven, and to this end, one of the features of the invention aims to provide means controlled by the wire severing means for retaining the work support in work clamping position regardless of the time in the cycle of operations of the machine when the treadle is released by the operator until the last fastening desired has been fully inserted into the work and severed from the wire.

Other objects and features of the invention will; appear as the description proceedsand will be claims.

Fig. l of the drawings is a view in side elevation of a machine embodying the invention.

F 2 isa view on an enlarged scale taken from the other side ofthe machine and showing the means for raising and lowering the work support.

Fig. 3 is a plan view partly in section of the parts shown in Fig. 2.

Fig. 4risa planview of the means for suspendingthe feed of the wire and'the-operating and controlling means therefor taken along the line 4:4c of Fig. 1, and

Fig. showsthe same parts as Fig. i in elevation.

The machine frame comprises a column 2 having mounted thereon ahead 4 which carriesthe fastening inserting instrumentalities of the machine including a wire-carrying spindle 6. The wire used in the machine is threaded'and is. screwed into the work by rotation of the spindle, the wire being fed downwardly by devices including a wire feed lever 8 operated by a cam 10 on one of a pair of lateral shafts 12 j'ournaled on the head i of the machine and driven from the wire spindle 6.

The work to be operated upon is supported on a work support 13 in the form of a horn carried by a horn post 14'. to which is secured a bracket 15 in which is mounted a rod (not shown) co-operating with a measuring rod 1 6 depending from the rear endof the wire feed lever 8 to regulate the extent pointed out in the appended of movement of: the wire feeding devices of the spindle 6 to causethe insertion into the work of a section of'the wire equalin length to the thickness of the work. The section of the wire inserted into the work is severed from the remainder of the wire to form an individual fastening by mechanism inclicated generally at 17 and operated by devices driven from the cam shaft and comprising a link 18 (see Fig. 1).

The operating mechanism for the machine comprises a driving shaft 19 the movement of which is transmitted to the wire-carrying spindle 6 by

pulleys

20, 21; and 22, and

which is governed in its operation by clutch mechanism 23 controlled by a treadle 24. The elements of the machine hereinbefore described constitute in themselves no part of the P en in ention. fo whi h r ason a more detailed, description of, them is deemed unnecessary.

As hereinbefore; pointed out, the wire carrying spindle 6 and the parts operated thereby are relatively-heavy, and the wire-carrying spindle is rotated at high speed so that a quick stoppage of the rotation-of the spindle the finger frombeneaththe collar 25 so asto.

cause the feeding of; the wiretol-be resumed, I provide a rod-f3.22havingv a collar- 34; formed with a lug 36 disposed for. engagement with one side-of the free-end of thefinger. The rod 32 alsohasmountedithereon a collar 3'8\-pr0vided--: with a-l ug e0. arranged for engagement withthe other. side of the finger 26 to move-it beneath the: collar 25w-henit is desired that the feeding-of'i'the w-irebe again suspended.

The rod 32is preferably adaptedfon control by the operaton andL'naay hemoved at any time in: the cycle of operations of the machine, whereas the invention aims to. causethe wire feedingmeans to become operative only at a predetermined time-in. the cycle of operations of the machine, such; that: thefirst fastening inserted willhe of full length. Accordingly, the collar 34: is loosely mounted on the rod 32 and i'syieldingly'urged-inthe directionv of the finger 26 and against-the collar 38 by aspiring-2L2: coiled. about the rod" 32 i and connected" at one end to the collar. 34: and at its other end to a collar 43 fixed. to the rod 32- Uponmovementoftherod' 32 in an appropriate direction, the spring 42 presses the lug 3fijagaiinst the finger- 26. If, however, the finger 26 is prevented" frommovement at the timewvhenthe rod32- is operated, the spring 42wiililipermit movement of the collar 34* on the rod, being itself put under tension so. as thereafter to exert: a force tending to move the finger from wire feed" suspending. position. Preferably, and in the illustrated construction, the rod-32'is moved to carry thefinger- 26; from beneath the collar. 25 byan arm 4 45a extending inwardlyfromiherod and designed tobe engaged bya cam surface 416' formed on a breakage of the parts.

treadle lever 48- having its hub mounted loosely on a shaft 50 fixed in a bracket 51 de-e Normally interposed in the path of move,

ment of the finger 26 so as to preclude its movement from wire feed suspending position under the impulse of the spring a2 is a stop 5e carried by a stud slidably mounted in a bearing 56 of an arm 58 constituting part of the wirev severing mechanism operated by the link 18. The stop 5%, as shown, is T-shaped having one of its arms projecting in the direction of the finger 26 and be ing disposed to overlie the finger upon move ment of the finger from beneath the collar 25. A spring 60 is interposed between the arm 58 and a collar 62 onthe stud of the.

stop 5% to permit downwardmovement of the arm 58 when the finger 26 is disposed beneath the projection of the stop without stood from the foregoing, the stop 54: operates automatically to control the movement of the finger from wire feed suspending position, the projection on the stop being lifted from the path of the finger 26 by the wire severing mechanism substantially simultaneously with the operation of the wire severing mechanism so that the wire feeding means is made operative at the beginning of a cycle of operations of the machine ending with the severance of the wire. a Stop 54 is retained-in elevated position by the presence of finger 25 beneath it as long as the machine continues to operate to insert fastenings.

- In accordance with the invention, means is provided for raising the work support to work clamping position simultaneously with the initiation of the insertion of fastenings.

= In the illustrated construction, such mechanism comprises a lever 6 fulcrumed at 66 to the horn post 14 and operated by a rod 68 pivoted at 70 to the operating lever 64: and normally pressed downwardly by a spring 72 wl ich consequently tends to main-' tam the work support in elevated position. The rod 68 is operated from the cam shaft of the machine by means comprising the usual pawl and ratchetmechanism (not shown) for compensating the movements of the work support to the thickness of the work carried there ay. The operating lever M is supported by lever 7e loosely mounted on the shaft 50 and fulcrumed to the operuting lever at 76insuch manner as to form a toggle with the portion 7 8 of the lever. The supporting lever 7- in turn is formed with an arm 80 inclined upwardly from the shaft 50, and mechanism is provided for operating the supporting lever of :1 form such As will be under-' as to take the weight of the worksupport and its associated parts from the operator, such mechanism comprising a pin 82- carried by a wiper arm sleeve'don a shaft 86 also fixed in the, framenof the machine and co-operating with'ablock 83 secured tothe arm 80 of the supporting lever-7e by screws 84:. Whenthe work supportis in work clamping position, the arm 85- iszdisposed substantially at right angles to; the arm 80 of the supporting lever-so that a force eX- erted downwardly a t/Z6 asby pressure upon the work will be transmitted through thearm 85 to its shafte86 with no tendency to, turn the shaft; The sleeve 87, whichcarries the arm 85 is operated by a sector gearv 88 carried by an arm*89 eX tending upwardly from a yoke-shaped portion of thefllever48 underlying the shaft 50.v The gear 88-1ne'shes' withteeth of, a toothed flange 90-, on the sleeve 87, the construction being such that the depression ofthetreadle {i8 causes movement of the sector gearZtocarrythe arm 85 to a positionto elevate the horn. Theshafts 50 and 86 arebraced. by-an ar'mQlbolted' on the shafts and formed atiitsaupper end with a bracket 92 having an inwardly ex? tending portion overlying the flange 90rvof the sleeve 87.' w

The initial movement ofthe supporting lever 74' upon depression of the 'treadle causes the lever 64'to swing about thepoint '70, thus elevating 'the horn 13 and the work supported thereonf After the work has been carried against the foot plate of the machine, however, the continued movement of the lever 74 moves the lever 64 about the point 66 compressing the spring 72. The normal compression of the spring 72 may preferably be adjusted, sucl1'adjustment,-in the illustrated construction, being provided for by a'set'screw 93 threaded into an ear 94: on the bracket'92. The further screw93 is set in, the less fulcrum 7 6 can be raised, and accordingly the less will lever 78 be rocked about fulcrum '66 withfia correspondingly less compression of spring 7-2; The sector gear 88 is adj ustably connectedto' its arm 89 by pin and slot connections 95 and a set screw 96 threaded into the arm andbearmg against the rear face of the gear.

Inasmuch as the horn 13 isunder'the control of the treadle 4:55, the release or the treadle by the operatonin the absence of mechanism other than the 'hereinbefore de-L, scribed, would causethe work support to be lowered immediately thereafter. The operator may, however,releasethe treadleatj any timein' the cycle of operations of the machine, in consequence of which the work support might'be lowered at a time when the final fasteningwas only partially inserted into the work, so that such fastening would project from the Work; in orderto insure that the final fastening willbe fully inserted and to enable the eiiicient operation of' the wire severing mechanism in severing the section ofthe wire inserted in the work from the wire, I provide mechanism for maintaining the work support in work clamping position until the final fastening has been fully inserted and severed from the wire. Preferably, and as shown, such mechanism-comprises a latch 98 fulcrumed on a bracket secured to the shafts50 and 8'6, respectively, and disposed for engagement with a shoulder 100' on the treadle 48 The latch9 8' is released from engagement withthe shoulder 100 by operation: of a rod102 connected to the latch 98 and toan arm 104 integrally connected with the arm 58 which operates the wire severing mechanism.

The manner of operation of applicants improved mechanism will. it isbelieved, be readily apparent from the foregoing-description butmay bebriefly summarized as follows: When: the: treadle 48 is depressed by the operator the horn is immediately elevated from'work receiving to-worh clampingposition by the sector gear- 88-, sleeve 87 arm 85, supporting lever 74- and operating lever 64. The depression of the treadl-e also turnsthe rod 32. sothat the spring 42 open ates through the collar 34 whenever the stop, 5.4 is carried out of the pathof: movement" of the finger: 26 tovmove the finger away-from-beneath the collar 25: on the rod 16 to permit the feeding of the wire to be resumed; The treadle is. normally maintainedain depressed position by the-latch 98 which, regardless of the time in the cycle of operations of: the machine when the operator removes his foot from the treadle, will: permit, the work support to 1 be lowered from Workclamping position only after the final, fastening has been fully inserted and, severed from the wire.-. The release; of the treadle by the l-atch98 permits the cam surface 46 to move downwardly away from the arm 44; and allows the rod, 321 and the collar-3-8 carried thereby: to, be moved by the spring 53 so as to. shift the finger 26 beneath the collar 25 to suspend the feed of the wire.

Having described my invention, what I claim as new and desire to secure by Letters Patent ofv the United States is:-

1. In a; machine of: the class described, fastening inserting mechanism, means for suspending the insertion of fastenings during the continued operation of. the machine, and positively operating meansmanually operable and automatically controlled to render the suspending means inoperatire.

2. In a machine of the class described,v fastening inserting mechanism, means for severing fastenings from fastening stock, means for suspending the insertion of. fastenings during the continued operation'of the machine, andrmanually operable means con-- trolled by the stock severing means:

4. In a machine for" inserting fastenings,v

wire feeding means, means for suspending? the. operation of the wire fee-ding means, manually operable means forrendering the suspending means inoperative, and positively operating automatic means for corn trolling the movement of the: suspending means by the manually operated mean-s;

In machine for inserting fastenings, wire, feeding: means, means for suspending the operation of the wire feeding means, manually operable means for yieldingly urging the suspending means toward inoperative position, and mcansrfor positively controlling the movement of the suspendingmeans to inoperative position.-

6. In a machine for inserting fastenings, wire feeding means, manually operable means for suspendingthe operation of the wire feeding means, means tendingrtorender the suspending means inoperative, and? means operated. in timed relation with the wirefeeding means for positively maintain ing the suspending means inoperative position except: at a predetermined time the cycle of operations of the machine;

7. In a machine for inserting fastenings, wire feeding means, means for suspending the operation of the wire feeding means, manually operated means for yieldingly urging the suspending means toward inoperative position, and, means operating: positively and automatically to control the movement of; the suspending: means: to inoperative position.

8. In a machinefor inserting fastenings, wire feedingmeans, means for suspending.- the operation of the wire feeding means, and means for moving the suspending means to inoperative position comprising a: rod, a lug yieldingly carried by the rod and tending, to move the suspending means to inoperative position upon movement, in one direction of the rod, and operator-controlled means for moving the rod.

9. In; a; machine for inserting fastenings,

wire feeding means, means for suspending the operation of the wire feeding means, means for moving the suspending-means to inoperative position comprising a, rod, yielding connections between; the rod: and: thesuspending means, and. operating meansforthe rod comprising a treadle'andco-operat- 'ing' parts between the treadle and rod for effecting angular movement of the rod.

10. In a machine for insertingfastenings,

" wire feeding means, means for suspending the operation of the wire feeding means, a

member for controlling the suspending means, means operative when the controlling member is 1n one position yleldi'nglyto urge the suspending means to inoperative position, means for rendering the suspendrelation to the wirefeeding means compris' ing a rod, a member yielding-1} mounted on said rod and tending upon movement of the rod to one position to, move the suspending means to inoperative position, a second member carried by said rod and spaced from the first-mentioned member and operative upon movement of the rod to another position to render the suspending means operative, a

treadl e for moving the rod to said first-mentioned position, and vielding means for moving the rod from said,first-mentionedposition to said second-mentioned position.

' 12. In a fastening inserting machine, Wire feeding means. means for suspending the operation of the wire feeding means, wire evering means, andmanually operable means controlled by the wire severing means for rendering the suspending means inoperative. L

13. In a fastening inserting machine, wire operation of the wire feeding means, means for yieldingly urging the suspending means toward inoperative position, wire severing means, and means operatively connected with the wire severing means for controlling the movement of the suspending meansto inoperative position.

14. In a fastening inserting machine, wire feeding" means, means for suspending the operation of the wire feeding means, means tending to render the suspending means inoperative, a stop normally interposed in the path of movement of the suspending means, and, means operated in timed relation with the wire feeding means for moving said stop out of the path of movement of the suspending means to permit the wire feeding means to become operative at a predetermined time in the cycle of operations of, the machine. Y

15. In a fastening inserting machine, wire feeding means, means for suspending the operation of the wire feeding means, a stop jecting member. feeding means, means for suspending the device normally-interposed in the path of movement of the suspendin'g' means, wire severing means, and means operated by t e wire severing means for moving the stop device out of the path of movement of the suspending means to permit the wire feeding means to be rendered operative substanially simultaneously with the operation of the wire severing meansg 16. In afastening'inserting machine, wire feeding means, amember for suspending the "operation of the wire feeding means, means tending to movesaidmember to inoperative position to render the wire feeding means operative,a stop device having aflaterally projecting. portion-normally interposed in the path of movement of said member, and means for moving; the stop device 'to carry the projecting portion ofthe device out of the path-of movement of said member to permit movementof saidmember to inoperative position." I 17; In-a fastening inserting machine, wire feeding means, a member for suspending the operation of the wire feeding means, --means" tending to move'themeinber out of operative position, a stopdevice having a laterally extending portion normally interposed in the' path of movement of sa-id'member, and means for movingsaidstop device at a predetermined time I in the cycle of opera. tions of .the machine to carry said projection out of the path of movement of said member to permitthemember to move to inoperative position 'torender the wire feeding means operative, said moving means comprising a yielding connection operable to permit movement of thestop device, relatively' thereto upon engagement of the proportion of the -stop'device with said 18; Ina machine of the-class described, wire feeding means, wire severing-means, means controlled by the wiresevering means for suspending 'the operation-of the wire "feeding means, and means separate from the wiresevering means for operating the suspendingmeans. i

-19."In"1a. machine of the class described, wire feeding means, means for suspending the operation of the wire feeding means, wire severing means," and manually operable means controlled by the wi're severing. means for rendering the suspending means 'inope'rativ e substantially simultaneously with the operationof the wire severin'gme'ans.

' 20. In a machine for insertin-g'fastenings, I

wire feeding means, wire severing means, a

work support movable between workreceiving and work clamping positions, and means operable by the wire severing means to con trol the movement of the work support from work clamping to work receiving position.

21. In a machine for inserting. fastenings, Wire feedingmeans, wire severing means, a

, new

work support movable between work receiving and work clamping positions, and means for controlling the work support operated by the wire severing means constructed to cause movement of the work support from work clamping to work receiving position substantially simultaneously with the operation of the wire severing means to sever a fastening from the wire.

22. In a. machine for inserting fastenings, wire feeding means, wire severing means, a work support, a treadle for moving the work support from work receiving position to work clamping position, means for retaining the work support in work clamping position, and means operatively connected with the wire severing means to release the retaining means.

23. In a machine for inserting fastenings, wire feeding means, a work support movable between work receiving position and work clamping position, a treadle for moving the work support to work clamping posi tion, a latch engaging the treadle for retaining the work support in work clamping position, and means for automatically releasing said latch at a predetermined time in each cycle of operations of the machine.

at. In a machine for inserting fastenings, wire feeding means, wire severing means, a work support, a treadle for moving the work support from work receiving position to work clamping position, a latch adapted for engagement with the treadle to hold the treadle and the worksupport in work clamping position, and means for releasing the latch to permit movement of the treadle and the work supportto work receiving position substantially simultaneously with the severance of a fastening from thevwire.

25. In a machine for inserting fastenings, wire feedin means, means for suspending the operation of the wire feeding means, a treadle for controlling the suspending means, means tending whenever the treadle is in one position to urge the suspending means to inoperative position, means for rendering the suspending means operative upon move ment of the treadle to another position, and means tending to move the treadle to said last mentioned position.

26. A fastening inserting machine having, in combination, wire feeding means, a finger movable between two positions in one of which it is operative and in the other inoperative to suspend the operation of the wire feeding means, means yieldingly tend ing to move said finger to feed permitting position, means yieldingly tending to move said finger to feed suspending position,

a lever arranged for movement between two positions in one of which it renchine.

27. A fastening inserting machinehaving, in combination, wirefeeding means, a finger positionable for suspending the operation ofthe wire feeding means, a treadle controlled rod provided with a pair o lugs one of which upon movement of the rod in one direction tends to move the finger to inoperative position thus permitting the feeding of wire and the other of which upon movement of the rod in the opposite direction moves the finger to operative position to suspend the feeding of the wire, and a stop under the control of a cyclically moving part of the machine to control the movement of the finger to inc erative position.

8; fastening inserting machine having, in combination, wire feeding means, a member movable from one position to another to permit or suspend the operation of the wire feeding means, and a stop, operative under the control of a cyclically moving part of the machine to prevent movement of said member to position to permit the feed of i e except at predetermined times, movable out of the path o movement of said member under the control of said cyclically moving part. i

29 A fastening inserting machine having, in combination, means for controlling the initiation of wire feed comprising a'finger, means for moving the finger between feed permitting and feed suspending positions, a stop positioned to prevent feed permitting movement of the finger, and means, operative after the machine is started, to move the stop from the path of the finger to permit the movement of the latter to feed permitting position at a predetermined point in the cycle of operation of the machine.

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

snonsn eonnn;