US278629A - Machine for making spikes and bolts - Google Patents

Description

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MACHINE FOR MAKNG SPIKES AND BOLTS.

w No. 278,629. Patented May 29,1888.

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, 6 Sheets-Sheet 2. W. TAYLOR.

MACHINE FOR MAKING-SPIRES AND BOLTS. N o. 278,629.

(No Model.)

Patented May 29,1883.

6 Sheets-Sheet 3. W. TAYLOR. MAGHINE' POR MAKING SPIRES AND BOLTS.

(No Model.)

Patented May 29,1888.

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W. TAYLOR. l MACHINE-POB. MAKING SPIKBS AND BOATS. No. 278,629. Patented May 29,1883..

(No Model.) 6 Sheets-Sheet 5;

` W. TAYLoR.

MACHINE POR MAKING SPIKBS AND BOLTS. No. 278,629. Patented May 29,1883.

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MACHINE POB. MAKING SPIKES AND BOLTS. No. 278,629.V Patented MayZQ, 1883.

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. time@ rstares PATENT @Finest WILLIAM TAYLOR, OE-PITTSBURG, PENNSYLVANIA, AssIeNOE 'ro `THE ANGULAE STEEL NAIL COMPANY, (LIMITED,) OE SAME PLAGE.

|V|"ACH|NE`VFOR MAKING SPIKES'AND BLTS.

SPECIFICATION forming part of Letters Patent No. 278,629, dated May 29, 1883.

Application filed December-11, 1882. iNo model.)

To all 'whom it 'may` concern i Beit known that LWILLIAM TAYLOR, a citizen of Great Britain, residing at Pittsburg, in

the county of Allegheny and State of Pennsylvania, have made a new" and useful-improvement in bolt and spike machines `of that class wherein therod` from which the spikes and `bolts are prduced is automatically and intermittingly fed into the machine` and gripped while having a headformed thereon hypercussive force or the impact of a sudden blow, the bolt being lseparated from the rod and `pointed preparatory to the subsequent forward `movement of the rod, of which the following is a specification. n Y

The first part of my invention relates tothe construction and operation of the feeding de-V vice.

` The second part consists in the means employed for holding back the heading-ram while the rod from which the bolts are to be cut is fed `in and properly gripped.

The third part relates to the means whereby the action of the heading-ram may be stopped, released, and controlled without affecting the movement of the Otherparts of theA machine.

` The fourth part ofmy inventioncomprises the peculiar `construction of such devices as operateconjointly7 to bring about a proper move-d ment of the gripping,cuttingoti", and pointing y Figure 1 represents a side elevation of my improved bolt-machine; Fi g.2, a rear end view of the same g. Fig. 3, a detached front elevation fofthe feed device. Fig. 4 represen ts the fron't end of the machine; Fig. 5, a side view, partly in section Fig. 6, the various cams used on the main shaft, arranged with respect totheir n relative positions thereon; Fig. 7, a top view 'or general plan of thefentire machine.

represents a longitudinal sectional view of the machine. v i

As my improved bolt-making machine comprises an intermittent feeding device, grippers 'rod, cutting-oft' and releasing contrivances,

together'with `suitable cams, levers, wheels,

spijings, frictionrollers, and such hereinafterdescribed appliances and appendages as maybe necessary to constitute a complete machine, it is. essential that its supportingframe should Vbe substantially built to `enable itto withstand the vibratory shocks incident thereto. To this gend I construct a strong cast-iron frame, 2, LandA mount the ,same upon suitable legs, and

also provide itfwith such-bearings and guide- [ways-as may berequisite for the reception and ,propersupport of the moving parts. this frame 2 is arranged the main drivingn shaft 3, on one of the projecting ends of which are placedside by side a loose and fast pulley,4 4 5, by means of which power may be commu- Inicated tothe shaft through the instrumentality of au endlessv belt, and to steady theV Across revolutions of the shaft and operations ofthe p machine a balance iiy-wheel, 6, is made fast on the shaft beside the aforementioned pulleys. v g

Located on the extreme opposite end ofthe main shaft 8, and rigidly scoured thereto, is a thick circular disk, 7, having entirely across its axial line and face a dovetailed groove, 8, in which is fitted a. movable block bearing -a projecting wrist-pin, 9, made adjustable eccentrically with respect to the axis of the main shaftwh`ereby`'. the wrist is given a crank-like f movement, the stroke of which maybe varied and regulated to suit the requirements of the case.` This wrist-pin i9 carries one end -of a long horizontally-arranged connecting-rod, 10, its other end being attached by a ball-andsocket joint," 11, to the extremity ot' a vibrating arm, 12, placed partially over and `across the front of the machine, its other end being loosely connected by a pin, 13, tothe station-` for holdingthe rodduringthe headingprocess, a n 50i header that is driven against the end of theini'ed their opposite ends being separately jointed roo o j v each to its downwardly-bent lever 18, sopivoted the one to the other by means of a verti- Y cal pin at or near their middle as to constitute a peculiar sort of tongs, one end of which will close only when the other is forced open, and

these by the same pin are hinged to a small plate, 19, that rests'upon and supports them between two yuprights, 20. The free extremities ofthese angularly-bent levers 18 are each provided with a strong bevel-edged steel tooth, 21, held in their respective places and made adjustable by means of suitable pinch-screws,-

caused to move towardand from the machine onl each revolutionvof the driving-shaft 3.

In a rigid standard, 24,- on the outer end of the projecting portion of the mainframe isa setserew, 25,-that serves to regulate thebackward stroke ofthe post carrying the.- short links 17, and in the standard 24 is inserted a movable but fixed eye-piece, 2d, Fig.3,having its axis on a line corresponding to the "space yexisting between the steel teeth 2l in the jaws of` the pivoted tongs. This eye should be of asize adapted-to serve as a guide and director for the ironrod on its way to the bolt orfspike forming devices.

5 directlon will iirst exert a closing-pressure on kthe tongs, and thena quick forward action of Ou revolving the main shaft 3 the actionof its projecting wrist 9 will,through its connecting-rod 10, impart a vibratry movement to the long arm 12, and when that movement is toward the body of the machine the iirst impulse'is upon the tablet carrying the post to which the small links are attached, and as it moves forward in obedience to the army the farther ends of the links are spread apart, and, by reasonof their connection with the tongs, itsjaws are made to close until its teeth approach each other sufficient-ly to bite hard up on any object happening betweenthem. Now, it' a rod ot' ironl suitable for the sort of bolts required be passed through the guiding-eye 26 in the standard 24, and extended onward so as to be taken hold of by the steel teeth 21, the impelling movement ofthe arm 12 in that ythe same, by means of which ythe ironl rod will be fed alongor advanced the proper length for forming a bolt,which, when ascertained, is fixed or regulated by the'position of the wrist l9 to the axial line of the main shaft. Upon each revolution ot' the wrist thearm will travel V at each reciprocationof the arm'12. Asthe end of the rod is by this means intermittingly fed forward,it eventually reaches and is caused to enter a suitable hole in that end of a stout square dieboX, 27, rigidly aflixed to the main frame`of the machine a short distance behind the abovedescribed feeding-in device. Within thisboxthe iron rod on its advance is first gripped, held, and headed during the backward movement of the feed, and -then cut oif and knocked free that the same operations may be performed on the succeding end of the rod. `Clo accomplish these several functions the die-box 27 is provided with four transverse passage-ways leading into its center, so as' to cross the line of travel given the bolt-rod.

-Two of these, or those nearest the feeding de- --vice, contain the grippingdies 28, which consistof steel bars having their inner ends nicked and hardened, whereby they will more securely and positively hold the rod, and preveut'its slipping hack while 'undergoingthe heading operation. Each of these gripping-dies and the means and mode of operation are alike,

being forced outwardly aud apart by a spring, 29, coiled around it,fand made adjustable lin the direction of its length by means of a nut, 30, at apoint wherethe outer end enters a sliding bar, 31, having a like movement within suitable guides, 32. The -end of this sliding bar most remote from the die-box 27 is beveled to an angle of -forty-ve degrees, and is acted upon by a similar bevel, 33, on the adjacent end of anotherA sliding bar, 34, arrangedy at right angles to the iirst.

friction roller, 35, that bears against a single throw-cam, 36, on the main shaft 3, which at proper times forces forward the secondary bar l34, causing its bevel end to so operate on thatl The opposite end of y this secondary bar 34 is provided with an anti,

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spring, 37, is placed within a suitable slot in or about the middle of the secondary bar 34,

ythat serves to move it toward the operating cam 36 and keep its anti-friction roller 35 in contact therewith.

Within the die`-box, and on` the same horizontal plane, butseparated from the. grippers a distance equaling the lengthof rod necessary to form a head on a bolt, are locatedthe point- `ing and cutting-off tools 38, that move laterally and outwardly, eachr by an independent V-shapedspring, 39, (shown more particularly by dotted lines in the drawings, Fig. 4,) and are respectively forced inward at the same instant,each by its appropriate push-bars 40, that Vare provided with angular adjacent ends,

the movements being effected by means of. suitable cam s,41,onthemain shaft. In short,

substantially the same sort of devices are made use of for givingmotion to these pointing and cutting-od' tools `that are used for the gripping dies, so that the description ot' one Vwill'answer forfall, with the exception that' the cams 36,operating the push-bars of the gripping-'l IIS The chief mechanism employed for forming heads on the bolts comprises a stout iron` bar, 420r heading-ram,arranged horizontally and lengthwiseof the machine, and in substantial bearings 43, fonejotf` which is v'at or near the middle and the other the rear end of the main frame 2,*and in `these Vbearings it is made to slide with an endwise reciprocating movement, The greater portion of this ram is straight, but, for convenience, is s'o bent` at a point between its bearings as that its end nearest the center of the machine will be on a line with the feeding and gripping devices, and this end is provided with a steel die of such form as will give proper shape to the bolt-head. y

Attached to the ram 42, at or near thepoint of its bend, is a cross-yoke, 44, to which are rigidly affixed two separate and parallel rods, 45 ther free ends passing loosely through a fixed but adjustable yoke, 46, of similar construction, and thenthrough holes in the block 43, supporting the rear end of the ram. The adjustable yoke 46 is provided at its center with a lswiveled screw, 47, that is tapped into and extends through the bearingblock 43 rearward,terminatingin.ahand-wheel,48. Around each of these parallel rods above referred to is wound a stron g spiral spring, 49, and the `object of the swiveled screw is to adjust the tension of these springs.

- The heading-ram 42 is moved back endwise, so as to compress the powerful springs 49 around the extended rods, to which it is attached, at a comparatively slow rate of speed, by the toe 5() of a revolving cam, 51, on the main shaft acting against a lugy on the under side ofthe heading-bar 42, and when this bar or ram has been moved back as faras this cam 51 can effect it, there it is held byV a strong dog-bolt, 52, shot upward through the frame into a correspondingly-shaped hole in the lower side of the ram by means of an S-shaped lever, 53, so pivoted at a convenient point, 54, beneath the platform of the machine that its upper end, `55, shall rest upon a. cam, 56, on the main shaft, that will 'give itan upward movement and release it at -the proper time, enabling a spiral spring, 57, around thel dogbolt to force it down and clear of the ram.

Arranged loosely on the main shaft, beside i y that end of the S-shaped lever 53, and by this f means the header may he held back as long as desirable,while the` other parts of themachine are in operation 5 or it may be released `for acf tion by simply reversing `the lever, so asY to withdraw the disk from beneath theflug.

In this machine the points ofthe spikes are formed by compression and elongation, and to Y produce a good point in this manner and prevent the tools from sticking,it is essential that three tools should be used -to close upon and withdraw from the iron in different directions. Two of these tools movein ahorizontal plane, and together constitute three sides ot' a small tapering die-box, and a vertically-moving'tool forms `the fourth side, as shownin the enlarged and detached views, (numbered 3S and 62.) This thirdptool, 62,-is attached to a long lever, 63, pivoted at the rear end to and underneath the platform of the machine, and is curved upward and over the main shaft, its end resting upon a cam, 64, bywhich it is given the requisite motion. Occasionally a bolt or spike will adhere to the end of the rod bya very thin tenure, and require to be knocked ofi". To break this connection and free the'boltor spike, an angular lever, 65, is used, havingits fnlcrum above the other levers, and provided 1 with a bent steel finger, 66, that occupies a position directly over the pathway of the newly-made spikes. One end of this lever is arranged over the main shaft, so as to be acted upon byV a suitable cam, 67,which at the proper momentwill depress the flnger end and free `the finished spike;

The several parts of this machine" havingV been properly adjusted and set in motion, its

operationis as follows: An iron rod suitable for conversion into spikes or bolts, and while red-hot, is to have one end thrust through the eye or guide 26 in the stationary post, and onward between the'steel teeth in the jaws of the moving tongs, which will immediately seizeand by an advance movement carry it forward to the grippers, that will in turnclose upon it with a tenacious grip, whereupon the tongs will open sufficiently wide to clear themselves from the rod, and return by a backward `movement to obtain a `new and fresh hold upon it at a distance from the irstequaling the length required to form a nis'hed bolt or spike. At this instant the header will be'released andshot forward by its powerful springs against that portion ofthe rod extending beyond the grippers with sufficient force to form a head thereon. Asthe heading-ram returns to its former nposition the grippers` open, that the feeding ros device may bring forward a fresh portion of the rod. Then the pointing-tools advance, sever, and point the headed spike. As these several movements of the machine take place with great rapidity and regularity the red-hot iron rod is automatically fed in, headed, p ointed,and knocked off in the formoftinished spikeswith remarkable speed.

Having described the construction and operation of my bolt andspike makingmachine, Iclaim l. In a spike or bolt making machine, the

combination of the gripping-dies, the springactuated header, the pivoted bar Whichvactuates the feed, and the adjustable bar connected with said pivoted bar, and. a Wrist-pin secured to a disk on the driving shaft, and the fourmotioned feed consisting of a pair of pivoted tongs or vibrating arms having, iirst, a closing motionto seize and hold the rod; second, an advancing movement to carry the rod for- Ward the required distance a third motion to open and clear itselfpof the rod, and a fourth motion to return for a fresh hold thereon proparatory to a readvance.

2. A bolt or spike making machine provided with gripping-dies and a spring-actuated headin g-ram, in combination with an automaticallyinoving dog so contrived as to hold back the heading-ram during the advance of the rod from which the spikes or bolts are to be formed.

3. As a means of controlling theaction of zo lug on the lever of thedog as to prevent` the dog from releasing its hold upon the headingbar.

4, The combination, with the laterally-reciprocating slides 31 and 40, carrying the pressing and pointing dies, of the beveled slides adapted' to operate thc same, the mechanism forl operating said slides, and the lever 6 3 and the tool 62,-whereby`the blank is held while being pointed, substantially as and for the purpose specified. l WILLIAM TAYLOR. Witnesses: l

J osIAH W. ELLs, J oHN S. KENNEDY.

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