US526477A - Sawing-machine - Google Patents

Description

(No Model.)

' H. YOUNG.

SAWING MACHINE.

Patented Sept. 25, 1894 w Mme/VH8 a side elevation of a sawing machine embodyis lowered to eii'ect the feed of the blade or blades. Instill another type,the sash is re- UNITED STATES" PATENT I OFFICE.

HUGH YOUNG, OF CHICAGO, ILLINOIS.

SAWlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 526,477, dated September 25, 1894.

' Application filed April 16, 1890.

To all whom it may concern.-

Be it known .that 1, HUGE YOUNG, of Ohicago, in the county of Cook and State of Illi-- j nois, have invented a certain new and useful Improvement in Sawing-Machines, of which the following is a specification.

My improvement relates particularly to sawing-machines of the kind which are elnployed for sawing stone. In such machines there is usually employed a reciprocating sash furnished with a blade or a number of blades, and these blades are in many cases armed with diainondsor borts.

In one type of sawing machine neither the sash nor the blade or blades mounted therein, have any vertical movement but merely a reciprocating movement in the same plane, the feed being effected by moving the stone upward. In another type of sawing machine the sash ciprocated in the same horizontal plane and the blade is lowered within the sash to efiect the feed.

My improvement is applicable to any of the described types of sawing machines.

For simplicity of illustration I will represent the improvement embodied in a sawing machine of thattype in which the blade is immovable relatively to the sash and the feed is efiiected by moving the stone up to the saw. This illustration is sufficient for all three types because the construction of the sash would not vary in essential particulars for any of these types and it is in the sash that my improvement resides.

In the accompanying drawings Figure 1 is ing my improvement, the means for support ing and elevating the stone being omitted. Fig. 2 is an end view of the parts shown in Fig. 1. Fig. 3 is a plan or top view of the parts shown. in Fig. 1. h

Similar letters of reference designate corresponding parts in all the figures.

A designates the main frame of the machine.

B designates the sash.

.O designates the guides along which the sash is reciprocated and D designates the Serial No. 348,263 (No model.

. blade which is strained in and carried by the sash. a

The mainframe A, may be made in any way that is sufficient for supporting the sash and its guides but in the drawings it is shown as consisting of a number of upright beams or girders a", supported in any suitablemanner; horizontal beams or girders a surmounting the upright beams or girders, and crosspieces or stretchers afi extending across the upper edges of the beams or girders 01. There I are two pairs of upright beams or girders a. at each end of the frame. The beams or girders a of each pair are arranged at a short distance from the oppositepair. On each two pairs of the beams or girders a which are in.

line,a beam or girder a is mountedflThe beams or girders a may be secured to the beams or girders a in any suitable manner. Preferably all of them will be provided with flanges and then they may be secured by bolts passing through the flanges; Grosspieces or stretchers ad, here shown as made in the form of inverted T-bearns orygirders, ex-

tend across the tops of theheams or girders a uniting them together-and properly spacing them. These cross-pieces may be secured by bolts passing through their flanges; and flanges with which the beams or girders a are provided. Preferably the cross-pieces will be provided on their under sideswith lips or shoulders at, which beat-against the inner sides of the beams or girders a I The guides C, are shown as consisting of L-shaded beams or pieces OfmetaL'fastened by bolts against the inner sides of the up right beams or girders a.

The sash B is composed essentially of horizontal beams 12', and vertical beams 19*, extending therefrom. As here shown there are two of the horizontal beams b, and they are arranged side by side and parallel with each other at a short distanceapart. They are of the kindof beams which are commonly known asI-beams, having longitudinal flanges on both sides at the top and bottom. There are two pairs of the vertical beams or girders 12 At their upper ends they are secured to the under edge of the beams or grinders b, and in order that they may have a firm union with the latter they are provided with lateral extensions b* by which their bearing surfaces at their attachment to the longitudinal beams b are prolonged upwardly beyond their own vertical portions, thereby giving great stabilityto the sash. Bolts, 1), are shown as means for securing the beams or girders b, to the beams or girders 12 It will be seen that the structure consists essentially of two beams or girders I), each having secured to the under sides near the extremities two beams or girders h The cross-pieces or braces b are secured to the ers b. The lower extremities of these beams or girders 19 have spacing pieces bflfitted to them. These maybe made of angle-irons or of other suitable form. Bolts, screws or like devices may be employed to secure these spacing pieces b in position.

The beams or girders b may be additionally stiifened or braced to the beams or girders b, by means of obliquely arranged, rods b fitted at one end to the extremities of the bolts b and at the other end secured "by means ofnuts to lugs b formed or otherwise provided on the beams or girders 19 near the lower end of the latter. The positions of these rods being entirely beyond the opening of the sash, thus leaving the sash unobstructed while their connection with the beams or girders ata' considerable distance beyond or outside of'the vertical portions of these beams or girders 1) enables them to be brought in.

such diagonal relation to the beams or girders b b as to afford great additional stability. The sash thus formed travels along the guides O. In the present instance it is provided with rollers 12 which are mounted upon studs aflixed to the upper portion of the beams or girders 6 The beams or girders b are also provided with sockets Z1 in which are inserted blocks of wood or like material which bear against the edges of the guides O.

The lower portion of the sash may be steadied by guides O fastened to the beams or girders a, and when these guides are used the lower portions of the beams or girders b may be provided with sockets b fitted with ,blocksof wood or like material, for impingstrength for meeting the strains arising from the resistance offered to the blade and so can have a maximum length of vertical beams-or girders with a minimum vertical cross section :of the horizontal beams or girders, and thereby 'I obtain a greater working height with a given aggregate height; and it is desirable to keep the machine as low as possible.

What I claim as my invention, and desire to secure by Letters Patent, is-

A saw gate or sash composed of horizontal orlongitudinal beams and vertical or transverse beams secured to the longitudinal edges of the first said beams, the said vertical or transverse beams being provided at the point of attachment with bearing surfaces prolonged horizontally and outwardly beyond their main or vertical portions and their extremities being connected by oblique rods with portions of the horizontal or longitudinal beams which extend horizontally outward beyond their own vertical portions, substantially as specified.

HUGH YOUNG. Witnesses:

S. O. EDMONDS, WM. M. ILIFF.

Images