US1199906A - Press. - Google Patents

Description

W. KLOCKE 11. E. DOBSON.

PRESS. AFPI-.nunon rlLvzD ml. 12.1916. Patented 20ct 3, 1916;

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APPLICATION ULEB JAN'. IZ. 1916.

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'UNITED sTATEs PATENT OFFICE.

WILLIAM lKLOCK AND JOHN E. DOBSON, OF NEW YORK, N. Y., ASSIGNORS TO E. W. BLISS COMPANY, OF BROOKLYN, NEW YORK, A CORPORATION 0F WEST VIRGINIA.

PRESS.

Specification of Letters Patent.

Patented oct. 3, 1916.

Application led January 12, 1916. Serial No. 71,615.

United States of America, residing in the borough of Brooklyn, county of Kings, in the city and State of New .York, and in the borough of Manhattan, city, county, and

State Aof New York,respectively,have in! vented certain new and useful Improvements in Presses, of which the following is a specification.

Thisinvention rela-tw tov al press of the type adapted for the heavier kindvof work wherein pressures of two thousand tons or more may be encountereohy The general type of press forming the subject matter of this application is disclosed in the Klocke Patent No. 1,108,187. In the construction ofpress illustrated in the said patent, the stationary bedA is located above the movable plunger and the latter is operated by cranks which push the plunger toward the bed in the working stroke of thel punch. The base of the press and the bed are held together by ltie rods, and it will be lperceived that the entire strain incident upon the operation of thc'press comes upon the tie rods. This necessitates that the tie rods shall be of great strength and that the nuts and connections between the tie rods and the parts to which they are Secured shall be likewise of great strength and solidity. Nothwithstanding this, the enormous strains encountered in the operation of the press in time will stretch the tie rods.

The object of the present invention is to' lprovide a construction wherein the tie rods shall be entirely relieved from all tensile strain, and' this result is accomplished by supporting the bed from the base of the press and causing cranks which are likewise operated from the base of the press to draw the plunger toward the bed. Thereby all tensile strain will be removed `from the tie rods and the only strain to which they will be subjected will be a compressive strain between the bed andthe base of the machine.

A desirable form in which our invention may be embodied is illustrated in the accompanying drawings, wherein Figure 1 is a side view, partly in section, of a press constructed according to our invention; Fig. 2 is an end View thereof from the left-hand end, Fig. l, partly broken, and

Fig. 3 a section on the line 3-8, Fig. l, looking 1n the direction of the arrow.

The press in connection with which we have illustrated our invention is provided with a base or bottom A, a stationary bed B, and a movable plunger C. The stationary bed is supported on the base A by. stay rods D, of which a suitable number may be provided.l The machine is illustrated as having four of such stay rods on each side of the machine. These stay rods pass through lugs b on the bed B, and have nuts Z threaded thereon, by which the bed is supported, and which are adjustable to permit the bed to be supported in the desired position, and which serve to resist the downward strain of the table B and to transfer to the stay rods D compressive strains between the base A and bed B. The upper ends Z1 of the tie rods D pass through holes in lugs c on the plunger C, and serve to guide the plunger in its movements. Fig. 3 illustrates a die block E upon the bed B,'and a punch F upon the plunger C, and the'punch in this ligure is illustrated as drawing the work G down into the die block.v

In the base A of the machine is mounted a crank shaft H having thereon a -crank I,

the connecting rod J of which is connectedl to the plunger C and tends to draw the same down toward the bed in its operative movesuch knockouts may be employed, according to the length of the bed of the press. Each is illustrated as mounted upon'a bar M hung by rods m, m1 from the plunger C. The rods m, m1 are threaded in the bar M and at their upper ends have worm gears m2 which provide the desired adjustment for the knockouts through worms on the adjusting shaft N. Any otherknockout desired may be employed, as the invention is not concerned with this feature.

The crank shafts H aredriven from a driving shaft O having a pinion 0 which meshes in gear l?1 on shaft P, upon which is a pinion p meshing in gear Q1 on shaft Q. This shaft has pinions g w'hich mesh in the crank shaft gears H1 on the crank shafts H. The main driving shaft Q extends throughout the length of the machine, and has thereon as many pinions Q as there are crank shafts to be-driven. This main driving shaft extends down through approximately the center of the base of the machine, and the pinion g thereon each engage two crank shaft driving gears H1 on opposite sides of the machine.

The other crank shafts H, gears H1 and connecting rods J are similarly constructed to those described, and accordingly the same letters of reference are used for the corresponding parts.

We have illustrated the most desirable form of constructing -our invention now known to us, but the same may be modified and equivalent devices substituted for those illustrated, within the limits of the ap-l pended claims, without departing from the spirit ofthe invention.

We do not intend to be limited to -the precise construction of press illustrated, nor to the precise number of parts.

What we claim is 1. In a power press for heavy work, a base, a movable plunger, and a stationary bed between said parts, stay rods connecting the base and bed andforming guides forA guiding said plunger, a crank shaft mounted in the frame below said bed, and cranks thereon adapted to draw the plunger to its work. r

3. In a power press lfor heavy work, an upper movable plunger, a 'stationary bed below said plunger, connections between the base ofthe machine and the bed, a crank shaft mounted in the base, and cranks thereon adapted to draw' the plunger to its work.

4. In a power press for heavy work, a base, an upper movable plunger and a stationary .bed below said plunger, rods attached to the base and supporting s aid bed, and extending beyond said bed to provide guides for the plunger, crank shafts mounted in the base, and a plurality of cranks thereon adapted to draw the plunger to its work. l

5. In' a power press for heavy work, a base, an upper movable plunger and a stationary bed below said plunger, rods attached to-the base and supporting said bed, crank shafts mounted in the baseon each side of the press, and a plurality of cranks on said shaft adapted to draw the-plunger to its w'ork.

6l I'n a power press for heavy w'ork, a base, an upper movableplunger and a stationary bed below said plunger, rods attached to the base and supporting said bed,

a crank shaft mounted .in the base and a plurality of cranks on said shaft adapted to WILLIAM KLookia. l l JOHN E. DOBSON. Witnesses: l

FREDK. 0. FLADD, CHAs. J. ELLswoR'rH.

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