US85983A - Improved machine for heading- bolts - Google Patents

Description

'iateui i wW-eaeaem me `IOHN R. ABBE, OE PROVIDENCE, RHODE ISLAND.

Letters Patent No. 85,983, dated .Tamm/ry 19, 1869.

To all whom it may concern.-

Be it known that I, J oHN R. ABBE, of Providence, in the county of Providence, and State of Rhode Island, have invented a new and useful Improvement in Bolt- Heading Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this speciiica-A tion, and in which- Figure Il representsa plan of a bolt-heading machine constructed in accordance with my improvement, and

Figure 2, a longitudinal sectional'elevation of the same.

Similar letters of reference indicate corresponding parts.

. My invention consistsv in a combination, with stationary dies that constitute a formen of an intermittently-reciprocating upset working therein, and jaws which contain dies for clamping the bolt, and which, in addition to having an intermittently-reciprocating mo 'tion toward and from the stationary dies, have a swing- L ing and opening and closing action, to facilitate the entry and discharge of the bolt within and from them; the upset and jaws having their intermittently-recipe rocating motions communicated to them through sliding heads or frames by a revolving grooved cam orcams attached to a shaft, arranged to run lengthwise of the machine, while the swinging and opening and closing motions of the jaws .are eiiected by turning supports to them, through a slot made in one of the supports, acting against a pin fixed to the bed.

In the accompanying drawing, A is the bed of the machine, supported on or by suitable up'rights, B.

Arranged to run longitudinally of the machine, and working in bearings made in the uprights B, is a main or general driving-shaft,`O, on which is hung a grooved cam or cams, D D".

The one, D, of these cams, serves to give intermittently-reciprocating motions, through a pin, a, vfitting the groove in said cam, to aframe or head, E,arranged to slide longitudinally of the bed, within or on ways connected therewith. v

rlhis head E carries'theupset F', which is made adjustable longitudinally by a back-screw, b. The frontA end of said upset is dished or chamfered, to give the necessary chamfer to the bolt-head.

G G are stationary dies arranged between.' blocks c c, which are provided with screws d d, for the purpose of adjusting or setting said dies relatively to each other. These dies G G constitute the for1ner,and are of an internal configuration; intheir transverse section', corresponding to the cross-section of the upset, and of the shape of the head to be made on the bolt. The upset ,F works, as it is intermittently reciprocated, through said dies or formen that is of a shape and size to snugly yet freely fit said dies.` y

The cam D serves to give intermittently-reciprocating. metion or motions, through a pin, e, fitting the groove in said cam, to a head or plate, H, also arranged p to slide longitudinally of the bed, within or on ways connected therewith..

This head or plate H serves to carry the bolt-holding -clamps or jaws I I', which are fitted with suitable dies, j, covered by cap-platesfor griping the bolt in l between them.

The one, I, of these jaws, both of which may be reversible, with different-sized grooves in their faces, to suit diierent-sized bolts, is formed of or by a projection from a supporting-table or plate, J, which is-let into the head, H, as at g, so as to Atravel along with said head, but so that it is capable of being turned horizontally around the pin c as a centre.

The` other jaw, I', forms a similar projection from a supporting-table,.J, which is arranged to turn in or on,

into a notch in the edge of the lower table J, to hold the table from turning when the jaws are closed and in line with or facing the formen The upper table, J has aslot, M, made in it, at or near its back, on one side of its cent-re, said slot-terminating, at its outer end, in a mouth or opening, m.

N N are stops, provided with adjusting-screws. n n, vto arrest, at the proper time, the forward movement of the jaws or` tables which carry them.

The cams D D are adjustable, by nuts S S, on or along the shaft O, to adjust or vary the pressure of the vupset F on the bar, and the feed of the jaws I I up against the stationary dies G G.

To insert the bar or rod k, or to deliver the bolt made therefrom through the dies of the jaws I I', the latter, with their tables J J', are turned as indicated by red lines in fig. l, which action is accomplished, each back feed of the head, H, by the mouth m of the slot M receiving within or through it a stationary pin, R, that, in being struck by the inner edge ofthe slot M, effects the turning of the upper table, J to the position shown in redliues, said edge of, the slot travelling against or over the pin R, and said table acting against the jaw I of the under table, J, to simultaneously turn it. The jaws, in thus being turned out of line withthe dies G G`or upset F, are also opened, by a slight play established between the upper table, J and jaw of the under table, and drag of the spring on the latter.

The bar or rod k having been inserted, the succeed# ing forward movement of the head or plate H, through the action of the cam D on the pin R, causes the outer edge ofthe slot M to bear or rub over the pin R, aud thereby to close the jaws on the bar, and to turu them back to face the dies G G, whichl is the position reprej 'sented for them by bia/klimwand in this position they are held, after the mout-hm of the slot M has left thel pin R, by the spring L shooting into the notch in the edge of the lower table,

The cams D D are so grooved or formed as tosecure thefollowing action of the jaws I I 'and upset F, in relation to each other, in heading .the bolt within the former or dies G G, and after the head has been formed, to vsecure its retirement therefrom.

Thejawshaving been closed and turned, to gripe the rod or bar, and to bring it in line with the upset, are

' moved up towardor against the face of the dies G G.,

which projects the rod into the formen where it i remains, while the upset F advances to form the :head

ori-'the bolt, the irpset preferably remaining stationary a short interval, while the head is beingformed,v after which the jaws mve in a back direction, andthe upset F follows in the samecourse, to push the'bolt, bypressure on its head, out'o 'the former or dies G G. A

further-continued back movement of the jaws eects the turning and opening of them, as hereinbefore de` scribed,to admit of the headed bolt being removed,

and a fresh baror `rod inserted, the upset F, in the.

mean time, retiring, to repeat the'headingoperation on the next advance movement of the jaws.y v

A machine thus constructed and operating, has the pressure requisite for heading distributed over numerous parts, and bolts may be made or headed without fins on them, while every facility is afforded, in an automatic manner, for insertion of the rods or bars, also removal of the headed bolt, and all necessary adjustments by the several screws, or, it may be, wedges prov

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