US1533567A

US1533567A - Trip hammer

Info

Publication number: US1533567A
Application number: US666147A
Authority: US
Inventors: William C Nicol
Original assignee: ALEXANDER G PASCHKE
Current assignee: ALEXANDER G PASCHKE
Priority date: 1923-10-02
Filing date: 1923-10-02
Publication date: 1925-04-14
Anticipated expiration: 1942-04-14

Description

A ril 14, 1925. 1,533,567

. W. C. NICOL l TRI P HAMMER Filed Oct. 2, 1923 v 2 Sheets-Sheet l 2 Sheets-Sheet 2 s April 14', 1925. y

JEA

Patented Apr. 14, 1925. I I

UNITED STATES PATENT OFFICE;

WILLIAM C. NICOL, or EVERETT, WASHINGTON, ASSIGNOR E ONE-HALF To ALEXAN- DER G. PASCHKE, or EVERETT, WASHINGTON.

TRIP HAMMER,

Application filed October 2, 1923. Serial No. 666,147.

To all whom it may concern: Figure'2 is a side elevation of the same. Be it known that I, VVILLIAM C. NIooL, Figure 3 is a detail section taken on the a citizen of the United States, residing at line 33 of Figure 1 and Everett, 'in the county of Snohomish and Figure 4 is a detail horizontal section 55 5 State of Washington, have invented certain taken on the line of Figure 1.

new and useful Improvements in a Trip Referring to the drawings in" detail, Hammer, of which the following is a speciwherein similar referencecharacters desigfication. nate corresponding parts throughout the a This invention "appertains' to power maseveral views, the letter A generally indichinery and morefparticularly to trip hamcates the improved hammer, which commers used for forging or like purposes prises the supporting post or standard 5, where quick even blows are essential and which can be formed of any desired matethe primary object of the invention is the rial, suchas wood or iron. The upper end provision of an automatically operated trlp ofthe post 5has bolted or' otherwise secured 65 hammer embodying novel means for quickly thereto at oneside'face thereof the upstandsetting the trip hammer in operation and ing supplemental supporting post 6; Difor bringing about the effective and instant rectly below the supplemental supporting stopping thereof; post 6 and in spaced relation thereto is .ar-

A further prime object of the inventlon ranged a supporting bed 7, which is also 70 is the provision of a trip hammer embodybolted to one side face of thejmain su ing a-drive shaft, operatively connected to porting post or standard 5. This bed 7 the hammer through the mediumof a crank has secured thereto the anvil supporting andpitman and novel means for brlnglng' standard 8, to which is aflixed the anvil 9, the drive shaft into operation and means which can be of any preferred type. The 75 for bringing a brake band from out of enfront face of the supporting post 5 can gagement with the shaft,- said means also carry any preferred typeof bracket 10 forpermitting the releasing of the drlve shaft receiving different kinds ofswedges, so that and the setting of the brake, when lt lS the swedges can be moved into engagement desired to bring about the inst-ant stopplng with the active face of the anvil 9. 80 of the hammerr The lower end of the supplemental sup- A further object of the invention 1s the port, or post 6 carries the guide 11 for the j provision of novel means for resiliently conhgn1n1er.pr0per 12 hi h in l d th thi necting the crank with the hamm r, shank 18 reciprocably mounted in the guide. by giving an elastic, movement to the ham- 11' and the hammer head 14:, which is dis- B5 mer, the throw of the crank and the glve posed di tl above th il 9.

0f the spring transmitting-to the hammer The guide 11 includes pairs of spaced a quick and powerful move 'guide plates 15 and the platesof each pair A still further object of the invention is of guide plates are held in spaced relation, to provide a trip hammer of the above b spacing l t 16, The Spacing l t 90 40 character, which will be dura le and ef 16 are adjustable toward the hammer shank cient in use, one that will be simple and 13 in order to take care of wear and to easy to manufacture, and one which can be prevent any slip between the guide and placed upon the market at a small cos I hammer. The adjusting means includes a With these and other objects in view, the horizontal bolt 14 having nuts 15' threaded 95 invention consists in the novelconstruction, on its terminals for engaging the follower arrangement and formation of parts, as willplates 16, which bear against the outer ends be hereinafter more specifically described, of the spacing plates 16. The guide 11 can claimed and illustrated in the accompanybe bolted to a suitable supporting face plate ing drawings, in which drawings: Figure 1 is a front elevation of the impost 6, so as to permit the, guide 11 tobe proved trip hammer. held away from the face of the supporting,

17, carried by the supplemental supporting post. The extreme upper end of the supplemental supporting post 6 can be bolted or otherwise secured to a suitable ceiling joist 18 or the like and the upper end of this post carries a rotatable drive, shaft 19, one end of which has secured thereto the operating crank 20 and the other end a brake drum 21, which receives the brake The crank 20 carries a depending pitman rod 26, which is in turn connected by means of a clevis 27 or the like to the central portion of a semielliptical 'leaf spring 28, the terminals of which carry links 29. The

links 29 are fixed to their opposite sides of the shank 13 of the hammer 12 proper.

It is obvious that when the crank 19 is operated by the belt'24, the hammer proper 12 will be quickly raised and lowered and owing to the links 29 and the spring 28, a quick and effective blow will be delivered to the anvil at each throw of the crank arm.

1 The belt 24 is a loose belt and normally the same will not rotate the pulley 23 and in order to bring about the drive of the pulley 23from the belt24, the said belt must be tightened.

In order to bring about the tightening of thebelt, I provide a swinging frame 30 rtatably mounted upon one side face ofthe supplemental supporting post orbeam 6,

as at 31. The upper end of the swinging .Jelt 24, thus bringing about the tightening frame carries an idler pulley 32 for engaging the belt 24. A rearwardly extending operating arm or lever 33 is rigidly formed on the frame 30 at a point spaced from its pivot 31'and this arm or lever 33 has secured thereto an operating or pull chain 34, which extends down toward the base of the trip hammer. This chain 34 is inserted through a suitable ring 35 carried by the treadle 36 and the lower end of the chain 35 is rigidly bolted or otherwise secured to thestandard 5, as at 36. It is obvious that when the treadle 36 is thrown downward by the foot, that the lever 33 will be moved downward, thus bringing the idler pulley 32 into forcible contact with the thereof, and the consequent rotation of the. shaft 19. When the foot pedal 36 is released, the same will be moved to a raised position "by the use of a contractile coil spring 37 secured at one end to the treadle and to the opposite end to the bed 7, as at 38. The lever 33 will also be returned to its normal position upon the release of the pedal 36 by means of a contractile coil spring 39, the lower end of which is connected to the lever and the opposite endto the ceiling joist 18.

In order to bring about the quick and positive stopping of the trip hammer 14 when the treadle 36 is released, I connect the brake band 22 to the swinging frame 30 by means of a rod 40 and it is obvious, that upon release of the frame, the same will swing away from the post 6 and thus exerting a pull on the brake band 22 which will act upon the brake band 21 and stop the operation of the shaft.

lVhen the frame 30 is operated by the treadle for tightening the belt 24, it can be seen that the frame 30 will move inwardly toward the post 6, thus loosening the brake band 22 and permitting the rotation of the shaft 19.

The treadle 36 can be of any desired construction, and as shown the same consists of a pair of parallel arms 42 and a transverse foot bar 43. The arms 42 being'pivoted as at- 43 to any preferred type of support.

From the foregoing description, it can'be seen that I have provided an exceptionally simple and durable power trip hammer, which will effectively accomplish the pursame to occupy a minimum amount of space in a shop and it can be seen that the same will only take up an area of a shop equal to the area of the lower face of the support ing

posts

6 and 7 and the iron block 8.

Changes in details may be made without departing fromthe spirit or the scope of this invention.

What I claim as new is:

1. A power trip hammer comprising a supporting post, an anvil block, an anvil secured to the block, a supplemental supporting post secured to one side face of the main supporting post, a guide carried by the supplemental supporting post, a reciprocatory hammer head mounted in said guide, bearings carried by the supporting post, a rotatable drive shaft mounted in the bearings, and a crank carried by one end of the drive shaft, a pitman connected with the crank, a semi-elliptical leaf spring secured to the pitman rod, links connecting the terminals of the leaf spring with the pose intended. The trip hammer is also formed with a purpose in view, to allow the upper end of the hammer head, a drive pulley secured to the drive shaft, a brake drum secured to the drive shaft, a brake band for the drum, a frame 'pivotally connected with the supplemental post, an idler pulley connected with the frame for engaging the drive belt, means connecting the-brake band with the swinging frame, an operating lever secured to the frame at one side of the pivot, means for normally holding the frame away from said post and the idler pulley out of operative contact with he drive pulley belt and the brake band in operative braking engagement with the brake drum, a foot treadle carried by the lower end of the supporting post, means operatively connecting the lever with the foot treadle, and means for normally holding the foot treadle in a raised position.

2. In a power trip hammer, a supporting post, an anvil block carried by the post, an anvil secured to the block, a guide associated with the post including a pair of spaced plates disposed on each side of the longitudinal center of the post, a reciprocatory hammer including a relatively thin fiat shank slidably mounted between the plates of the pair of plates, a crank shaft, means operatively connecting the crank shaft with the shank of the hammer, spacing plates disposed between the plates of the pair of plates, and means for adjusting 30 WILLIAM o. NICOL.

Witnesses:

ALG. PASCHKE, Jnssn W. WILLIANS.