US3354694A

US3354694A - Transportable swaging press

Info

Publication number: US3354694A
Application number: US393273A
Authority: US
Inventors: William H Schwartz
Original assignee: Individual
Current assignee: Individual
Priority date: 1964-08-31
Filing date: 1964-08-31
Publication date: 1967-11-28
Anticipated expiration: 1984-11-28

Description

1967 w. H. SCHWARTZ 3,354,694

TRANSPORTABLE SWAG ING PRES S Filed Aug. 31, 1964 3 Sheets-Sheet 1 FIG. .1.

INVENTOR. WILLIAM H. SCHWARTZ BY m M )V ATTORNEYS 1967 w. H. SCHWARTZ TRANSPORTABLE SWAGING PRESS Filed Aug. 51, 1964 5 Sheets-Sheet FIG. es

INVENTOR. WILLIAM H. SCIiWAR I Z M )ia-aw W AT TOW Nov. 28, 1967 w, H. SCHWARTZ 3,354,694

TRANSPORTABLE SWAGING PRES 5 Filed Aug. 31, 1964 3 Sheets-Sheet 3 4 INVENTORQ WILLIAM H. SCHWARTZ Mu, M v 2 ATTORNEYS United States Patent 3,354,694 TRANSPORTABLE SWAGING PRESS William H. Schwartz, 325 Summit, Corte Madera, Calif. 94925 Filed Aug. 31, 1964, Ser. No. 393,273 2 Claims. (Cl. 72453) This invention relates to wire swaging presses, and more particularly to a wire swaging press of such construction that it is easily transportable to job sites, is of relatively small dimensions, and requires little room to operate.

Wire swaging presses are used, i. a. to secure the ends of guy wires and similar cables, as in construction work, in the form of a loop. Typically, the end of the wire or cable is doubled back upon itself, a thick metal clamp is slipped over the doubled portion, and the clamp is then compressed in a swaging press until the metal of the clamp flows between the strands of the guy wire or cable and pressure-welds them into an inseparable unit.

In order to achieve this result, the swaging press must develop die pressures on the order of hundreds of tons. This obviously requires that the press be of massive construction and this, in turn, could previously be achieved only by providing bulky and awkward mechanisms which made transportation of such presses to job sites and their operation in small spaces very inconvenient.

The present invention provides a compact and effective arrangement through a novel location of the mechanism and the use of novel linkage means by which the hydraulically developed 'swaging pressure can be transmitted to the dies from a hydraulic mechanism located entirely within one of the jaws of the machine. This arrangement not only provides compactness, but also protects the relatively delicate hydraulic mechanism from damage during transportation.

It is therefore the object of this invention to provide a swaging press of compact dimensions and low weight, yet still capable of developing very high die pressures.

It is another object of the invention to provide a transportable swaging press in which the hydraulic member is contained entirely within one of the jaws of the machine.

These and other objects of the invention will become apparent from a perusal of the following specification taken in connection with the accompanying drawings, in which:

FIG. 1 is a perspective view of the device of this invention;

FIG. 2 is a front view of the device of this invention;

FIG. 3 is a longitudinal vertical section along line 3-3 of FIG. 6;

FIG. 4 is a side elevation of the machine;

FIG. 5 is a rear view of the machine; and

FIG. 6 is a generally vertical section along line 66 of FIG. 4.

Basically, the invention teaches the construction of a transportable swaging press in the form of a pair of hinged jaws, one of which constitutes the frame and pedestal of the machine and the other the movable die carrying member, with the hydraulic mechanism contained within the confines of one of the jaws and its motion transmitted to the other by a linkage connecting the free ends of the jaws, the linear horizontal motion of the hydraulic mechanism being translated to linear vertical motion of the linkage through the intermediary of a shaft carrying a pair of angularly offset eccentric means.

Referring now to FIGS. 1 and 4, the machine in general is shown at 10. The machine 10 is composed basically of a pair of

jaws

12, 14 of which the upper jaw or "ice arm 12 carries the upper die 16, and the lower jaw 14 constitutes the stationary frame of the machine and carries the lower die member 18. Integrally formed with the frame 14 is the pedestal 29 of the machine consisting of front and rear feet 22 on each side of the machines center of gravity. The

jaws

12, 14 are hinged at their rear ends as at 24. The lower jaw or frame 14 contains a hydraulic cylinder 26 to which hydraulic pressure can be supplied from any convenient external source of hydraulic fluid (not shown). The cylinder 26 contains a piston 28 attached to a piston rod 30 whose free end is hingedly secured, as at 32, to an ear 34 of a torque arm. The rear end of the cylinder 26 is hingedly mounted on the frame 14 as at 38.

The torque arm 36 is afiixed against rotation to the squared faces 40 of a shaft 42. The torque arm 36 is held in place on the shaft 42 by a yoke 44. The shaft 42 is journaled in the frame 14 of the machine on

roller bearings

46, 48 and carries at its outward ends of a pair of eccentrically disposed

pins

50, 52. A pair of

linkages

46, 56 are journaled at one of their ends on the

pins

50, 52, respectively, and are held thereon by

caps

58, 60. The other ends of the

linkages

54, 56 are journaled on the ends of a pivot shaft 62 which is fixedly held in the upper jaw or arm 12 of the machine by a set screw 64.

The front ends of the arm 12 and frame 14, respectively, carry die supporting

means

66, 68 which removably support the upper and

lower dies

16, 18. The device is preferably so designed that the opening of the jaws at the die ends is rather small, preferably on the order of no more than two inches. In a typical embodiment, this requires a rotary movement of the arm 12 about its hinge 24 of no more than 3.

In operation, a doubled-back end of wire, with its clamp afiixed thereto, is inserted between the

dies

16, 18 when the

jaws

12, 14 are open. Hydraulic pressure is then applied to the cylinder 26, causing the piston 28 and piston rod 30 to move frontward, ie, to the left in FIG. 4. This motion imparts clockwise rotation in FIG. 4 to the shaft 42 through the torque arm 36. The rotation of shaft 42, in turn, causes the eccentrically located

pins

50, 52 to move downwardly so as to draw with them the

linkages

54, 56. This, in turn, causes arm 12 to rotate counterclockwise about its hinge 24, so that the

dies

16, 18 are drawn together. Due to the considerable mechanical advantage obtained in translating the rotary motion of the shaft 42 to the linear motion of the die 16, considerable pressures at the die may be produced with hydraulic means of relatively small size; for example, in a typical embodiment, a 5'' ID, 3000 lb. thrust cylinder can develop a swaging force of three hundred tons.

It will be seen that the present invention provides a simple and effective, yet extremely compact, swaging press. As a result of its compactness (the above-mentioned example occupies less than 10 cubic feet of space), its over-all weight can also be kept to a minimum (less than 600 pounds in the above-mentioned example). Obviously, the invention can be carried out in many different ways, of which the embodiment shown is merely illustrative. Therefore, I do not desire to be limited by the embodiment shown and described, but rather only by the scope of the following claims.

What I claim and desire to secure by Letters Patent is:

1. A swaging press comprising: a pair of elongated jaw members hinged to one another at one of their ends and carrying die means at their other ends; linkage means connected to one of said jaw members generally remote from its hinged end; rotatable eccentric means journaled in the other of said jaw members and eccentrically connected to said linkage means; and hydraulically extendable power means having one end pivoted to said other member adjacent the. hinged end of said other member, said power means including a piston and rod having an axis extending generally parallel to a longitudinal axis of said other jaw member; said power means being eccentrically connected to said rotatable eccentric means.

2. A swaging press comprising: a pair of elongated jaw members hinged to one another at one of their ends and carrying die means at their other ends; linkage means connected to one of said jaw members generally remote from its hinged end; rotatable eccentric means journaled in the other of said jaw members and eccentrically connected to said linkage means; and hydraulically extendable power means hinged to said other jaw member adjacent its hinged end and extending parallel to a longitudinal axis of said other jaw member and generally within the confines of said other jaw member; said power means including a piston and rod havingv an axis substantially parallel to said other jaw member and being eccentrically connected to said rotatable eccentric means.

References Cited UNITED STATES PATENTS LEONIDAS VLACHOS, Primary Examiner.

Claims

1. A SWAGING PRESS COMPRISING: A PAIR OF ELONGATED JAW MEMBERS HINGED TO ONE ANOTHER AT ONE OF THEIR ENDS AND CARRYING DIE MEANS AT THEIR OTHER ENDS; LINKAGE MEANS CONNECTED TO ONE OF SAID JAW MEMBERS GENERALLY REMOTE FROM ITS HINGED END; ROTATABLE ECCENTRIC MEANS JOURNALED IN THE OTHER OF SAID JAW MEMBERS AND ECCENTRICALLY CONNECTED TO SAID LINKAGE MEANS; AND HYDRAULICALLY EXTENDABLE POWER MEANS HAVING ONE END PIVOTED TO SAID OTHER MEMBER ADJACENT THE HINGED END OF SAID OTHER MEMBER, SAID POWER MEANS INCLUDING A PISTON AND ROD HAVING AN AXIS EXTENDING GENERALLY PARALLEL TO A LONGITUDINAL AXIS OF SAID OTHER JAW MEMBER; SAID POWER MEANS BEING ECCENTRICALLY CONNECTED TO SAID ROTATABLE ECCENTRIC MEANS.