US184412A - Improvement in steam-hammers - Google Patents

Description

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T. n. MORGAN.

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sTEA1lb-Hmmm.v No.184,412. Patented Nov.`l4,1876..

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T. Rl MORGAN,

' STEAM-HAMMER. K Nc. 18%,41Z. Patented Nov. 14,1876.

THOMAS n. MORGAN, or ALLIANOE,

,PATENT OFFICE..

OHIO,- ASSIGNOR TO vHIMSELF CHAS. E. MARCHAND, OF SAME PLACE.

IMPROVEMENT lN STE-AM-HAMMERS.

Specification forming partlof Letters Patent No. 184,412, dated November 14, 1876; application filed October 17, 1876.

To all whom it may concern:

`Be it known that I, THOMAS B. MORGAN,`

of Alliance, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Steam-Hammers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.y

My invention relates to certain improvements in steam-hammers.

Figure 1 is a side elevation of my improved steam-hammer. Fig. 2 is a rear elevation of the same, while Fig. 3 is a side elevation, showing a portion of the frame cut away to clearly represent certain parts ofthe valvegear. Fig. 4.- represen-ts an enlarged vie-w of the mechanism for actuating the valve ;V and Fig. 5 represents the levers applied independently of each other.

My invention consists, first, iny thecombination, with the ram of a steam-hammer, of a laterally-moving slide arranged to enga-gewith the rear side of the ram,and a bell-crank lever, one end of which connects with the Vvalve-stem and the other with th treadle, by 'means of a rock-shaft and connecting-rod.

-anvil D, while the upper die E is attached to the ram E', whichl is connected to a steampiston in cylinder C by means of thepistonrod F. G is a rock-shaft, journaled in the frame B, and upon the outer end of said rockshaft the arms H H are rigidly secured. I

designates a connecting-rod, the upper end of u which is pivoted to an arm, @secured to the stem b of a rotary throttle-valve, w, which `serves to govern theV admission of steam to end of crank H. Slide c is provided with a boss, c', which is screw-threaded to receive a set-nut, d, lthe latter serving to secure the slide to the arm" in any desired position. A further provision to regulate the throw ofthe valve is made, by formingthe rod I in two parts, as shown, and provid-ing the adjacent en ds with right and left handed screw-threads, with which engagev correspondingfemale threads Ot the adjusting-nut L. By simply turning the nut L, the rodis lengthened or shortened, and the movement of the valve is correspondingly adjusted. The rod I is preferably constructed i-nv two parts,the-same as rod l, and is pivoted at its upperend toa slide, e, which may be adjusted,ras desired, on-the arm H. 'The lower end of rod l is pivotedto an arm, e', secured to rock-shaftf, theends-of which aresupportedy in bearings g g secured to the base A. Atreadle, M, is secured tot-he ends of rock-shaft f by means of joints f f. The rear portion ofsaid treadle is provided with an arm, h, upon which a counter-weight, h', is placed, and adapted to be adjusted, so that its power shall be sufficient to overcome the weight of the several-'parts connected to the treadle, and keepthe forward end of the treadleraised when the hammer is not inoperation. An arm, W, is rigidly secured tothe rock-shaft, G, between-.the plates of frameB, and tothe outer end of said varm is pivoted the lower end ot' aslide, N, which slide-travels between the undercut guide t'. The slide N has a bearing,yj, secured lto its outer face, upon which is journaled a bell-crank lever,O 5 hence the position-ot' the bell-crankA lever v.maybe varied by raising orloweringthe slide N The upper end ot' the bell-crank lever is pivoted to-'the lower end'of the valve-'stem attached to the `slide-valve, which latter may be one of the many kno-wn forms-oi' -slidevalves. The lower end* of bell-crank leverO is provided with a pin, upon whichis preferably placed a steel `anti-friction roller,

l which engages in a vertical slot formed in the groove, n, in the front face of the slide N.4

This groove may be formed between the plates o, which may be secured to the slide in an adjustable manner, in order to 4take up for any wear of the plate or guides.

'I contemplate three different methods of constructing the parts last described: First, thelaterally-moving slide may beformed solid, and a diagonal groove cut therein to receive the diagonal guide; second, to construct the slide `N with oblong slots formed across its face, and secure the plates o to the face ofthe slide by means of bolts, the outer ends of which may be let into the plates o o` flush with their front faces, while the rear ends of the bolts are provided with set-nuts to rmly secure the plates in any desired position.

When the guides or plates are worn loose `they can 4be readily set up snugly to the guide by loosening, the nuts and pressing them against the diagonal guide, and then securing them to the slideby means of the bolts and set-nuts above set forth.

`Instead'f securing the diagonal guide to the ram it may be formed as a part of or securedto the slide, and the guides attached to the ram, or the latter may be grooved and .thesame result accomplished, the object being to have the ram impart a lateral movement to the slide.

The operation of the hammer is as follows: The operator places his foot on the treadle M, and partially turns the rock-shaft j', thereby opening the throttle-valve x, which connects with the treadle by means of the connecting-rods and intermediate rock-shaft. The amount of steam used can be varied by adjusting the position of the upperV connectingrod relative to the crank-arm H, and a further adjustment is allowed by adjusting the length of the rod itself by means of the right and left handed nut.-` i 4 The movement of the slide-Valve is adjusted `for long or short strokes by means of the lower `connecting-rod, i the length of which may be varied, or the position of., the rod on the crankarm changed, the` same as in the y case ofV the upper rod.

When the treadle is depressed it serves to open the throttle-valve, and also shift the slide-valve to open the steam-port leading from the valve-chest to the lower end of the the piston, and raising the ram.

The ram in its upward stroke imparts a latf eral movement to slide N`, which, "'in turn,` moves the valve toward the upperend of the valve-chest, and this movement is accomplishedby means ofthe` bell-crank `lever` en m t gaging within the slot formed inthe rear `sideil of the slide NQ" l when the mm hs fetched the iimitfoflitsi` upstroke,the valve will have shifted lto ein.`

llaust steam from below the piston, and admit live steam above the same, the expansive force of which materially assists `in imparting sufficient force to the blow of the ram.` Just before the ram has` reached the limit of its downstroke the valve will have shiftedto admit live steam below the piston, and thus cushion its stroke.`

The valve-gearing, constructed and arranged vas above described, is adapted for` use onany hammer, and a positive connection of the ram and gearing is always assured, regardlessof t the length or size of the ram. y

When a short ram is employed, there is alf` ways sucient roomto secure amplemeans to actuatethe the slide-valve. Insteadof con-` necting the slide-valve and throttle-valve to` a single operating lever `or treadle, the sevf eral parts may be arranged as shown in Fig. 5, i The connecting-rod I, by `means of which the throttle-valve w is i opened: and closed,`lis adiustably secured to a rockvshaft, Z, andan operating handle, z, attached to the opposite end.

The rock-shaft G, to which the valve-,stem is secured by means of the bell-crank lever, is rotated by the handle u, thus allowing the valve to be operated independently, if de# sired. t J

Having fully described my invention, what I claim as new, and` desire to secure byLete ters Patent, isy l 3 1. In a steam hammer, the combination, with the ram and slide-valve, of a laterally-moving slide, constructed to engage with the rear side of the ram,v and a bell-cranklever, one end of which is connected with,`and is operated by,

the slide, substantially as and for the purpose specified.

e `2. In a steam-hammer, the combination, with the ram E', slide-valve `and stem, andlaterally-moving slide P, of the bell-cranklever Q,

slide N, and means `for raising and lowering the slide, substantiallyas and for the purpose i e specified.

3. In a steam-hammer, the combination, with the guide m, secured to the rear side of the ram, of a `laterally-moving` slide and ,means,` substantially as set` forth, for actuating the slide-valve, substantially,` as and posesetforth.` i y y y 4. In a steam-hammer,the combination, with the slide-valve and ram, of a laterallyfinoving slide, P, bell-crank lever O, `slide N, `rock-shaftl Gr, and means for operatingthe valves, sub` stantially as and forthe` purpose specified,`

5. The combination, with the rock-shaft G i for the nur and valve gear connecting with the slidevalve, ofthe treadle M and connecting rod, constructed to be adjustably secured to crank H by a slide, e, provided with a set screw, substantially as and for the purpose specified.

6. The rock-shaft G, provided with arms H H', and connecting-rods adjustably secured thereto, in combination With the throttle-valve, treadle, and slide-valve, the latter connected with the rock-shaft by suitable valve-gear, substantially as and for the purpose set forth.

7. The combination, with the throttle-valve Y and treadle, of an intermediate rock-shaft and connecting-rods, one or both constructed to be readily varied-in length by means of a right and left hand screw threaded nut, substantially as and for the purpose specified.

In testimony that I claim the foregoing I have hereunto set my hand this 10th day of October, 1876.

THOS. R. MORGAN. Witnesses:

A. L. J oNEs, J. R. MORGAN.

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