US481450A

US481450A - Die-plate

Info

Publication number: US481450A
Authority: US
Publication date: 1892-08-23
Anticipated expiration: 1909-08-23

Description

L.. c. WETZEL. DIE PLATE.

Patented Aug. 23, 1892'.

INVENTOI? aw b A 7'TOHNEYS.

UNITED STATES PATENT OFFICE.

LEWIS CALVIN WETZEL, OF SCOTTDALE, PENNSYLVANIA.

DIE-PLATE.

SPECIFICATION forming part of Letters Patent No. 481,450, dated August 23, 1892. Application filed PebruaryZS, 1892. Serial No, 422,449. (No model.)

To all whom, it may concern: 7

Be it known that I, LEWIS CALVIN WET- ZEL, of Scottdale, in the county of \rVestmoreland and State of Pennsylvania, have invented a new and Improved Die-Plate, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved die-plate which is simple and durable in construction, very effective in operation, and arranged to quickly and conveniently bring the desired-sized die into proper position for immediate use.

The invention consists of certain parts and details and combinations of the same, as will be fully described hereinafter, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming apartof this specification, inwhich similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan view of theimprovement. Fig. 2 is a side elevation of the same. Fig. 3 is a sectional side elevation of the same on the line 3 3 of Figs. 1 and 4, and Fig. 4 is a plan view of the stock.

The improved die-plate is provided with a die-stock A, made in two sections B and B,

hinged together at G at the rear side, as is plainly illustrated in Figs. 1 and 4. The sections B and B are formed with suitable handles D and D, respectively, for conveniently manipulating the die-plate when using the same.

In the sections B and B are formed circular recesses E and E, respectively, in which fit the dies F and F, respectively, also made of circular shape and formed at their under sides with shafts F fitting into corresponding recesses .01 bearings arranged in the sections B and B.

In order tohold the dies F and F in position in the sections B and B and at the same time permit the dies to revolve, washers G are provided, fitting on the under sides of the shafts F and abutting against the under sides of the sections B and B. A screw H passes through each of thewashers and screws into the respective shaft F so as to hold the washer in place to prevent accidental displacement of the respective die F or F.

In the peripheries of the circular dies F and F are formed recesses I and 1, respectively, having threads, so as to form cutters, the two dies being provided with correspondinglysized recesses I and I and corresponding threads therein, so that when the dies are turned the opposite or registering recesses I and I form a circular cutter for the desired size of bolt to be out. By this arrangement the desired number of different-sized cutters may be arranged on the two disks, the latter, however, have to be turned to bring the corresponding-sized recesses into register at the joint of the two sections B and B, as will be readily understood by reference to Figs. 1 and 3.

Directly belowthe registering recessesIand I of the two dies F and F is formed an enlarged opening B in the adjacent edges of the two sections B and B, so that the bolt to be out can readily pass through the said aperture to be engaged by the cutter.

In order to fasten the dies F and F in the proper place after two correspondingly-sized recesses have been brought into register with each other, pins J and J are employed, extending vertically through the dies F and F and engaging a corresponding aperture B formed in the sections B and B, as is plainly shown in Fig. 4.

When it is desired to change the position of the dies F and F, so as to bring a different-sized cutter over thecentral aperture B then the operator withdraws the pins J and J from the corresponding apertures B in the sections B and B and then turns the dies until they reach the desired position. At that time the pins J and J register with the corresponding apcrtures B The pins are then pressed downward, so as to engage the corresponding apertures B to lock the dies in place. The pins J and J are formed at their upper ends with suitablehandles for conveniently inserting or withdrawing the pins, as above described, and for moving or turning the dies on their shafts F In order to lock the two sections B and Bof the die-stock in position when the sections are closed, a locking-bar K is provided, pivoted at K to the front edge of the section B, the said bar extending over the front edge of the two sections and being formed at its free end with an inwardly-projecting lug K in which N is provided, formed with an elongatedslot N, engaged by a pin 0, projecting from the top of the section B. The pin 0 forms a pivot for the catch N and permits the latter to have a slight longitudinal movement, so as to engage with its book end N a. pin P,

projecting from the top of the locking-bar. K...

As shown in Fig. 1, the two dies F and. E are formed with six different-sized cutters, so that the die-plate can be readily utilized for cutting threads on six different-sized bolts.

It is understood that the dies F and F are turned on their shafts F as-above described, so as to bring the corresponding-sized recesses into proper register over the aperture: B. Whenthis isdone, the dies are locked inplace by the pins .1 and J, and the die-plate is then used: in. the usual manner for the thread; the bolt being engaged first by theopenin-g B andthen by the threads in the registering recesses I and 1. When the thread has been cut, the operator swings the catch N T rearwai 'd, so. as to disengage the pin P, and bythen loosening the-set-screw L the bar K isswung outward to permit of opening the sections B and Bof the-stocksA, the said sections swinging on the pivot .C, and thus disengagingthe dies F and F from the threaded bolt.

position by the bar K, the latter being fastened in place by the catchN. Another bolt of the samesize can then be cut in the manner abovedescribed.

It will be seen that this die-plate. is very f simple and durable in constructionand com- The sections. B and B are then again closed-and locked in claim-as new and desire to secure by Letters Patent- 1. In a die-plate, the combination, with the stock A, formed of two sections B B, hinged together at one side and provided with the circular recesses E E, handles D D, and open- .ing B3 in, the adjacent edges of the sections, of the dies F F',.fitting in the recesses E E and provided with shafts F mounted in bearings in the said sections, and with the threaded recesses I I, means for lockingthe dies in j position in said recesses, and the bar K, hinged to one section-and havingitsfreeend E detachably secured to the other section, substantially as described.

2. In a die-plate, the combination, with the stock A, formed of two sections B B, hinged together at one side and provided with the circular recesses E E, apertures B handles DD", and opening-B in the adjacent edges ,of the sections of thediesF F, fitting the recessesE E and provided with shafts-F fitting in bearings in the said sections, and with the threaded: recessesI I in their peripheries,

the-pins J J, extending through thedies and engaging the aperturesB of the sections, the bar K, hinged to one section and provided with. an inwardly-projecting lug, and a set screw and catch for locking the free end of' the-bar tothe other section, substantially as herein shown and described.

LEW-IS CALVIN WETZEL.

1 Witnesses:

J OHN- RUTHERFORD, JAMES DALTON.