US17284A - Blacksmith s striker - Google Patents

Description

ATN UFFICE.

HARTWELL KENDALL, OE EAST DORSET, VERMONT.

BLACKSIVIITI-IS STRIKER.

To crZZ fr0/wm it may concern Be it known that I, HARTWELL KENDALL, of East Dorset, in the county of Bennington and State of Vermont, have invented a new and useful Machine for the Use of Blacksmiths, which I denominate a Portable Trip- Hammer; and I do hereby declare that the following is a full, clear, and exact description of 'the construction and operation of the same, reference being had to the accompanying drawings, making part of this specification, in which- Figure l is a perspective view. Fig. 2 is a perpendicular longitudinal section. Fig. 3 is a perspective view of the back end of the springs (s p and s 29) and hammer handle (G) showing the manner in which they are connected by the ends (3 A and 5 6).

The same letters and numbers refer to similar parts in the different figures. p (A A Al B B) is a frame or bench, made of rm hard timber, about five feet long and eighteen inches wide. The front end (A) is formed of one solid block, eighteen inches -by twelve and two feet and a half long. It is cut away at the lower end so as to be considerably less in size and supports the anvil upon its upper end as represented. The sidepieces (A A) are about eight inches broad and six inches deep, and are secured to the block (A) by means of mortise and tenon or in any other convenient manner. They are supported at the other end by the legs (B and B), and the frame is strengthened and rendered firm by means of bolt and braces as represented. The legs and braces should be only about three inches thick in vorder that there may be a plenty of room for the springs between them. (C C D) is a strong upright frame erected upon this bench about one foot from the back end. To this frame I hang the hammer (I-I), in the usual manner, by means of the handle (G) and other fixtures as represented.

(1' r) is a spring secured to the cap (D) and arranged so as to come in contact with the handle in its upward movement and thereby serve to arrest its progress in that direction and give it an impetus in an opposite one. The thumb screws at (r) are for the purpose of adjusting this spring to any required position.

(s p and s p) are two long springs arranged horizontally just beneath the side pieces of the bench and all about six inches longer than the sidepieces. They may be made either of wood or steel, but I prefer wood. When made of wood they should be about three inches wide and one inch and a half thick at the butt end and from half to Vthree fourths of an inch at the other. They should be so'exactly alike that either will fit inthe place of the other and so con structed that they may be put in either side up, and hence they may be turned over at any time if they shall 4become somewhat permanently bent so as to require it. They enter mortises made in the block (A) and are held in place by means of a pin or rod passing through them over which are staples secured to the block (A) near the mortises as represented in Fig. 2. At the other end they are connected to the back end of the hammer handle (Gr) by means of the rods (3 4t and 5 6) and the other fixtures as represented in (Fig. 3).

(Ze) is a bent iron lever arranged so as to turn upon its fulcrum (y) and press upon the springs (s 79 and s p) at a short distance (say six inches) from where they enter the mortises in the block This lever it will be understood, is between the springs and has a pin at (y) upon which it turns and another at extending out five or six inches on each side, so as to reach across each of the springs and come in contact with them both and press them downward when the lever is drawn up as shown in Fig. l.

(Z e) is an axle which passes through the block (A) and is upheld at the other end by means of a proper support attached to the sidepieces of the bench for that purpose as represented in Fig. 2.

(M) is a ratchet wheel upon the axle (Z e) and is furnished with a catch (n) to prevent it from turning in one direction. (O) is a crank upon the same axle (Z e).

(7) is a rope which connects the end of the lever with the axle (Z e).

(a a b c c aZ is a treadle frame which is attached at the back end to the legs (B B) by means of a rod or bolt upon which it turns or vibrates as shown in Fig. l.

(E and F) are studs attached firmly to the sides of the frame (A A) which extend downwardly nearly to the floor passing just inside of the treadle frame and all for the purpose of preventing the said frame from vibrating in a lateral direction.

(1 2) is a rod which connects the treadle lio frame with the hammer handle (Gr.) It is attached at the lower end to the treadle frame siX or eight inches from the rod on which this frame vibrates, and at the upper end tothe hammer handle, three or four inches-forward of the pivot on which the handle turns.

The hammer (H) will vary `in weight from fifteen to forty pounds according to the work which it is required to do.

It will be seen by reference to the draw]- ings that the anvil and hammer are furnished with dies, similar to those commonly used in trip hammers, only that in this machine they are fitted, toward the front part, for swaging iron into various shapes. It will be observed also that there is arranged just back of these dies a set of chisels for the purpose of splitting and cutting off iron. Now these dies and chisels may be readily removed and their places supplied by others of any desirable form or size. Hence it will be found that the machine in this: respect is very useful and possesses many and great advantages over the ordinary methods of doing such work both as regards the i manner of inish .and the despatch with which it may be executed. Now if anything in regard to the construction, arrangements,

or proportions of the machine still needs explanation, it will suffice to remark that the ratio of the drawings to the working machine is that of one to nine; hence the dimensions of the various parts can be readily ascertained from the drawings.

Operation: Now suppose the machine in the condition represented in Fig. 2, (as it should be when not in use) and the blacksmith desires to use it; he will turn the crank (O) and thereby draw the lever into the position represented in Fig. l, whereby the springs (s p and s p) will be forced into action and the hammer (H) elevated as shown in Fig. 1 and the catch (n) being in contact with the ratchet wheel (m) will retain all in that position. Now by placing the foot upon the treadle frame (a b c) either in front or at the sides the hammer may be readily operated with great effect. When it is desired to give still greater force to the blow the operator may do so by taking hold of the handle (Gr) with his hand, at the same time that he operates upon the treadle, and thus bring to bear the combined force of both hand and foot for the purpose of working the machine and adding to the etlicacy of its operation.

l/V hat I claim as my invention and desire to secure by Letters Patent is- The use of the spring s p s p when constructed, arranged and operating in the manner and for the purpose specified. HARTVELL KENDALL. Witnesses:

JosIAH DAYTON, JOHN CURTIs.

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