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Publication numberUS397244 A
Publication typeGrant
Publication dateFeb 5, 1889
Filing dateMar 20, 1888
Publication numberUS 397244 A, US 397244A, US-A-397244, US397244 A, US397244A
InventorsLudwig Melciiior
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Stone-sawing-machine gage
US 397244 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)



Patented Feb. 5, 1889.




SPECIFICATION forming part of Letters Patent No. 397,244, dated February 5, 1889.

Application filed March 20, 1888.

To all whom it 17mg concern.-

Be it known that we, Lunwie MELoHIoR and FRIEDRICH MEYER, of \Vilmingtou, in the county of New Castle and State of Dela ware, have invented new and useful Improvements in Stone-Sawing-Machine Gages, of which the following is a specification.

Our invention is an improvement in stonesawing machines, and particularly in that class of such machines in which a gang of saws is secured in a reciprocatingframe; and the invention consists in the novel construc; tion and combinations of parts, as will be hereinafter described and claimed.

As the constructions for supporting, adj usting, and operating the reciprocating frame form no part of the present invention, it is not necessary to show or describe the same herein.

In the drawings, Figure 1 is a perspective view of the improvements. Fig. 2 is a sectional view on about line 50.1, Fig. 1. Fig. 3 is a detail view of one of the hook-bolts. Fig. l is a detail view of one of the clamps. Fig. 5 is a detail view of one of the guides, and Fig. 6

2 5Iis a detail view of the bracket intended for use with frames having square side bars.

The frame A may be of ordinary construction, as shown, with side bars, B, and end bars, C, the latter being slotted longitudinally for the passage of the hook-bolts D, which secure the saws E in the frame, so the said saws may be adjusted laterally to set them toward or from each other, as desired.

In this class of machines it has been common heretofore to place between the saws, immediately inside of the end bars, 0, blocks, which serve to keep such saws properly apart, and such blocks may be provided in different sizes, so the saws may be held different distances apart. Our improvements avoid the necessity of these filling-blocks and provide for bracing and guiding the saws in sawing short stones at points between the ends of the frame, and preferably between the opposite ends of the short work or stones and the ends of the frame. To this end we provide the brace-bars G, which extend between the sides of the frame, and are connected at their ends adj ustably to the side bars thereof. In connecting the ends of the cross-brace bars to the sides of the saw-frame we prefer to em- Serial No. 267,918. (No model.)

ploy clamps II. In Figs. 1, 2, and at these clamps Hare shown as provided near their upper ends with sockets 71', to receive the ends of the cross-bars, and with screws h, to secure them to said cross-bars, while their lower ends curve outward at 76" and are provided with screws 71 In use the said clamps are placed on the bars G, with the ends of the latter proj ected sufficiently to rest on the side bars, B, the portions 72' of the clamp projecting out under the bars B, and the set-screws 713, turning against the said side bars, serve to keep thecross-bars in any desired adjustment along the side bars. This form of clamp may be used on square side bars,B, aswell as round ones; but it is preferred to use it only on the round side bars, and to use the bracket shown in Fig. 6 when the side bars, B, are square. The said bracket (shown in Fig. 6) has arms and 2, to project above and below the side bars, B, which arms support screws 3, by which the clamp may be held to the side bars. This clamp, like that shown in Fig. 1, has a socket, 71 and set-screw h, to receive and secure the cross-bar. The cross-bar is preferably formed with a rib or rail, g, extended along its upper edge, and it is graduated according to any suitable scale, so the adjustable guides, presently described, may be accurately set thereon, as may be desired.

Theguides I are fitted on and adjustable along the cross-bars G. In the construction shown the guides have openings 71, through which the cross-bars G are passed, and setscrews 2" serve to secure the said guides in any suitable adjustment on the cross-bar. By preference these guides are formed below the cross-bar, with downwardly-facing shoulders I, which form bearings for the upper edges of the sav 's.

Heretofore in the sawing of short stones the sa'vs, when operated under any considerable weight or at all fast, have been found to bend, twist, and buckle, so that to practically saw such short stones it has been. necessary to run the saws under very little weight and at a low rate of speed, rendering the oper tion. slow, and consequently expensive. Our

braces, comprising the cross-bars and 'the guides thereon, between the ends of the sawearryin frames, and in practice arran sueh guide-braces on opposite sides of the stone or work to be aeeqinplished-that is to say, be-

5 tween sueh work and the ends of the sawst no upward curving or arching ol;' the saws is possible, thus insuring a speedier sawing, as well as causing the saws to make a eleaner eut, as will be understood.

Having thus described our invent ion, what we claim as new is 1. An attaelunent, st'ibstz'tntially as deseribed, comprising a eross-bar, guides thereon, and clamps having near one end sockets in which the ends of the eross-bar may be seeured, and having their lower ends eurved outward and provided with a elamping-sm't-w, substantially as set forth.

2. In a stone-sau-ing apparatus, the eombination, with the-frame having side bars, ot' the cross-bar having guides for the saws, the (SlillllPS having openings fitted to receive the cross bar, sueh clamps being at'ljustable along the side bars of the frame, and set-serews lior scouring the ela'mps in any suitable adjust ment along said side bars, substantially as set forth.

3. The hereiirtlesm'il'ietl improvement in stone-sawing apparatus, eom 'n'ising a crossbar provided. with guides for the saws, and clamps eonneeted adjustably with the ends ot' said cross-bar, said clamps being provided with set-sm'ews, whtnieby they may be seeured in any suitable adjustment along the side bars of the saw-earrying trame, substantially as set forth.

4. In a sttnie-sawin g apparatus, a eross-bar provided with guides secured on and adjustable therealon such guides being provided on their sides with downwanl'ly-l aeing shoulas and For the purposes t"aeii'|g shoulders, substantially as set forth.

LUD'WIG M Elftllltm. 'l lEill' l'liRltll MEYER.


ttsonoe ON EILL, (llARLEH UPPlCN'lEUlLJ ll-i.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2702538 *Aug 10, 1951Feb 22, 1955Wilhelm Burkhardt OttoChain saw for stone working
US6845766 *Nov 13, 2001Jan 25, 2005Calvasina S.P.A.Cutting block for a sawing machine for sawing stone blocks
US20020078941 *Nov 13, 2001Jun 27, 2002Alessandro PozziCutting block for a sawing machine for sawing stone blocks
Cooperative ClassificationB28D1/127