US1521036A - Percussive tool - Google Patents

Description

Dec. 30, 1924. 1,521,036

- H. H. MERCER PERCUS SIVE 'IGOL Original Filed May 19, 1920 Patented Dec. 30, 1924.

UNITED STATES PATENT OFFICE.

HENRY H. MERCER, F CLAREMONT, NEW HAMPSHIRE, ASSIGNOR TO SULLIVAN MA- CHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

PERCUSSIVE TOOL.

Application filed May 19, 1920, Serial No. 382,620. Renewed August 28, 1922.

To all whom it may concern,

Be it known that I, HENRY I-I. MERGER, a citizen of the United States, residing at Claremont, in the county of Sullivan and State of New Hampshire, have invented certain new and useful Improvements in Percussive Tools, of which the following is a full, clear, and exact specification.

My invention relates to percussive tools, and particularly to that class of channelers in which a plurality of gangs are mounted on a single truck.

It has for its object to provide an improved percussive tool of the multiple tool type. Another object of my invention is to provide an improved channeling mechanism of the multiple gang type in which an electrically driven pressor cylinder is'used to generate fluctuations of operating fluid to cause reciprocation of the gangs. A further object of my invention is to provide a mech anism of the class described in which a single actuating or pressor cylinder may cause simultaneous operation of the plurality of gangs, but cause their operation in a stepped relation. A still further object of my invention is to provide a channeler of the pneumatic type in which a plurality of gangs are caused to reciprocate in opposite direc tions by means of a single pressor cylinder.

In the accompanying drawings I have shown for purposes of illustration, my invention applied to a track channeling machine in which a plurality of gangs are transported on a truck upon which the pressor cylinder is also mounted.

In these drawings,-

The figure is a view partially in elevation and partially taken in central vertical section through the cylinders of the tool motors and pressor.

In this illustrative embodiment I have shown the parts mounted on a truck gen erally designated by 1 which is provided with. the usual wheels 2 adapted to guide the truck and cause its motion along a track 3. Mounted atopposite ends of the truck are a pair of standards 4, 4' upon which are mounted tool motor cylinders 5, 5, these cylinders containing pistons 6, 6, having piston rods 7, 7 connected'to and actuating gangs of channeling tools 8, 8.

These tool motor cylinders and related parts are identical in construction. In each, the upper end of the piston rod is provided Serial No. 584,763.

some cases, while operation continues, the

upward movement of the tools is sluggish. I have accordingly provided larger cylinders 5, 5 and by the use of the differential piston rods, secured a greater upwardly acting force than in the ordinary machine without making the downward force sutficient to ofi'set the improvement.

Mounted between the two tool cylinders is a pressor cylinder 10 in which a ditl'erential piston 11 reciprocates under the action of a driving motor 12 which transmits its rotary motion by way of gearing 13, and from the latter to a crank, not shown, and so to a connecting rod 14 which causes reciprocation of the piston 11. To the op posite ends of the pressor cylinder 10 are secured Y connections 15 and 16 which have, respectively, branches 17 and 18, and 19 and 20. These branches lead to the cylinders 5, 5 of the tools and the Y connection 15 leads by means of its branches 17 and 18 respectively to a point adjacent the bottom of the right hand cylinder 5' and to the top of the left hand cylinder 5, whereas Y connection 16 leads by means of branch 19 to a point adjacent the bottom. of the left hand cylinder 5 and by means of connection 20 to a point adjacent the top ofth'e right hand cylinder 5'.

From this construction it will be obvious that downward movement of the pressor piston 11 will cause a compression below the piston and a raretaction above the piston and that the left hand piston 6 will be moved upward while the right hand piston 6 will simultaneouslybe moved downward and that reverse movement of the piston 11 will effect an opposite result. In other words, the two gangs of tools will be moving simultaneously, but will be separated in operation by a phase difference of 180 degrees.

One advantage of this construction is that vibration is reduced in a very desirable manher. A second advantage is that by the proportioning of the parts a very rapid and reliable channeler is provided in which positiveness and speed are combined to a high degree.

While I have in this application specifically described one form which my invention may assume in practice, it will be understood that this form of the same is shown for purposes of illustration and that the in vention may be modified and embodied in other forms without departing from its spirit or the scope of the appended claims.

lVhat I claim as new and desire to secure by Letters Patentis:

1. In a percussive tool, a double acting fluid pressor, a plurality of tools having actuating cylinders, conduits connecting one end of said pressor with opposite ends of said cylinders, and conduits connecting the other end of said pressor with the remaining ends of said cylinders.

2. In a percussive tool, a double acting fluid pressor, a. plurality of tools having actuating cylinders, branched connections leading from the opposite ends of said pressor, the branches of one of said connections being joined to the opposite ends of adjacent cylinders and the branches of the other connection being cross connected to the remaining ends of the cylinders where by opposite impulses are transmitted to the tool actuating cylinders.

3. In combination, two gangs of channeler tools, separate actuating motors for each gang, a double acting pressor cylinder, a connection from one end of said pressor cylinder to one end of one of said first mentioned motors and to the opposite end of the other thereof, and a connection from the opposite end of the pressor cylinder having branches leading to the remaining ends of said motors.

4. In combination, a fluid pressor, two' gangs of channeling tools, actuating motors ton rod and being subjected alternately on opposite sides to fluid pressure from said pressor.

6. In a percussive 11160l1LI1lS111,2L double acting fluid pressor comprising a cylinder having a double acting piston therein, a

' plurality of tools, actuating means for each of said tools including relatively movable cylinder and piston members one of which is connected to each of said tools, and conduits connecting the ends of the pressor to the spaces at opposite sides of the pistons of said tool actuating means whereby the simultaneous movements of the tools are in opposite directions.

7. In a percussive mechanism, a double acting fluid pressor, a plurality of tools, actuating means for said tools respectively each comprising relatively reciprocable cylinder and piston elements one of which is operatively connected to its respective tool, conduits connecting oneend of said pressor with the spaces atone side of one of said pistons and at the other side of the other of said pistons, and conduits connecting the other end of said pressor with the remaiuing ends of said cylinders.

8. In a percussive mechanism, a pair of tools, operating means for each of said tools each comprising relatively reciprocable cylinder and piston elements one of which is operatively connected to its respective tool, and pressor means for causing operation of said tools in alternate striking relation by subjecting each of said tools simultaneously to pressure generated by said pressor means.

9. In a percussive mechanism, a plurality of tools, operating means for each of said tools comprising relatively reciprocable cyl inder and piston elements one of which is operatively connected to its respective tool, and movable fluid pressure generating means operative in timed relation with respect to said tools and operatively connected thereto to sequentially operate the same by simultaneously subjecting the same to pressure fluid from said generating means.

10. In a percussive mechanism, a plurality of tools, fluid pressure actuated means therefoig'movable fluid pressure generating means the movement of which has timed relation with respect to the operation of said tools, and independently operative connections between said means and each of said tools to simultaneously transmit pressure fluid thereto to cause sequential opera tion of the same.

11. In a percussive mechanism, a plurality of tools, movable actuating means therefor the movement of which has timed relation to the operation of said tools, and means including yieldable means whereby said tools and actuating means are operatively connected for sequential operation of said tools to simultaneously impart substantially equal actuating forces. thereto.

12. In combination with a fluid pressor, a channeler comprising a tool gang, and means subjected to pressure fluctuations produced by said pressor for reciprocating lot) said gang including a piston member, a cylinder member in which said piston member moves, one of said members being operatively connected to said gang and the other held relatively stationary, means connecting the spaces in said cylinder member at opposite sides of said piston member with said pressor, and means for causing the gang lifting impulse imparted by said pressor to exceed the striking impulse imparted thereby.

13. In combination with a fluid pressor, a channeler comprising a tool gang, and means subjected to pressure fluctuations produced by said pressor for reciprocating said gang including a piston member, a cylinder member in which said piston mem ber moves, one of said members being operatively connected to said gang and the other held relatively stationary, means connecting the spaces in said cylinder member at opposite sides of said piston member with said pressor, and means including rods of different size at opposite sides of said piston for causing the gang lifting impulse imparted by said pressor to exceed the striking impulse imparted thereby.

14. In a percussive mechanism, a plurality of tools having actuating cylinders, pressor means for creating a series of timed impulses, conduit means leading to the opposite ends of said cylinders, conduit means leading to the other ends of said cylinders, and connections between said conduit means and said pressor means whereby successive impulses are transmitted to said conduit means in turn.

15. In a percussive mechanism, a plurality of tools each having actuating means comprising relatively reciprocable cylinder and piston elements one of which is operatively connected to its respective tool, pressor means comprising elements cooperating to form a pair of chambers of alternately enlarging and diminishing volume, conduit means connecting one of said chambers to the spaces at opposite sides of said piston elements, and conduits connecting the other of said chambers to the spaces at the other sides of said piston elements.

16. In a percussive mechanism, a plurality of tools, pressure actuating means therefor, fluid pressure generating means, and means whereby said tools are subjected simultaneously to pressure fluid generated by said generating means to cause sequential operation of said tools.

17. In a percussive mechanism, a plurality of tools, fluid pressure actuated means therefor, fluid pressure generating means adapted to sequentially actuate said tools by simultaneously subjecting each of the same to pressure from said generating means, and means whereby the actuating pressure fluid for simultaneously actuating said tools is equalized.

18. In a percussive mechanism, a plurality of tools, reciprocating fluid pressure actuated means therefor, fluid pressure generating means adapted to sequentially actuate said tools by simultaneously subjecting each of the same to pressure from said generating means, and means whereby the actuating pressure fluid for simultaneously actuating said tools is equalized during one stroke of the operation of each of said tools.

In testimony whereof I aifix my signature.

HENRY H. MERCER.

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