US1300879A - Metal-cutting machine. - Google Patents

Description

e. P. BISSER & A. P. WILLIAMS.

METAL CUTTING MACHINE.

APPLICATION FILED act. 16. m7.

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MET'ALCUTTING MACHINE. APPLICATION FILED OCT. 16. 1911.

Patented Apr. 15, 1919.

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METAIFCUTTING MACHINE.

Specification of Letters Patent.

Patented Apr. 15, 1919.

Application filed October 16, 1917. Serial No. 196,838.

To all whom it may concern:

Be itknownthat we, GEORGE P. RIssER and ALBERT P. WILLIAMS, citizens of the United States, residing at Seattle, in the county of King and State of Washington, haveinvented certain new and useful Improvements inMetal-Cutting Machines, of

which the following is a specification.

This invention relates to metal cutting machines, and its object is to provide a device of this character which is designed, moreparticularly, to be employed in cutting off superfluous endsof bolts driven through a ships hull to aflord proper lengths for riveting.

. Afurther object of the invention is to provide for the operative mechanism a supporting frame provided with means for engaging the work andalso-havingbraces for maintaining the machine in operative position.

The invention consists in the novel construction, adaptation and combination of parts, as will be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a view in side elevation showing an em-' bodiment of the present invention illustrated as applied. Fig. 2 is a plan view of the same. Fig. 3 is afront elevational view thereof. Fig. 4 is a fragmentary longitudinal vertical section taken through 44 of Fig. 3. .Fig.15-is a detail sectional View through 5.5 of Figs. 1 and 2. wReferring to. the drawings, the. reference character B. designates-a bolt driven through a frame member 6 of a. vessels hull, it being required to out said bolt ofi at the plane indicatedbybrokenlines a'cw in Fig. 1 at a suitable length for riveting.

In carrying out our invention we pro vide a frameconsisting in agirder member 7 having at one end a head elementS provided with afront face 9 disposed in substantially rectangular relations to the girder member 7 Formed in one side of said head element is a finger 10 provided at its underside with a notch 11 adapted tohook over the bolt, as represented. in Fig. 3. This finger serves also as a Jaw in cooperation withan opposingjaw 12 formed on the endof a lever 13 fulcrumed by a pin, 14 and is regulated by means of a screw 15 engaging in a threaded aperture provided in the end of the lever. The screw 15 is operated by a hand wheel 16 and impinges against a lug 17 provided on the frame member 7, as shown in Figs. 1 and 2.

- The gripping end of the jaw 12 isdesirably'serrated to afiord teeth 18. The fulcrum pin 14 is carried by a vertically movable plate 19, which is secured at adjusted elevations by. means of bolts 20 passing through elongated slots 21 provided in the plate and holes 22 provided in ears 23 formed on the frame member 7 V The purpose of vertically adjusting the plate 19 is to locate the height of fulcrum pin 14 so as to present the aw face 12 in substantially rectangular relations to the frame member 7 for various diameters of bolt B.

Formed or provided on the frame member 7 are standards 24 in which are journaled a shaft 25. Mounted on this shaft is a sleeve 26 constituting part of a rotatable frame having at one end a radially disposed arm 27 and at its other end a wheel 28 which is provided with worm teeth 29. Securedin a saw arbor 30. t

31 represents a circular saw mounted on a collar 32 which is rigidly secured to the forward endofthe arbor 30, said saw being detachably connected to the collar 32 as by means of a set screw 33 (Fig. 4) engaging in a threadedhole in the arbor end.

34 represents a spur gear wheel secured to the rear end of said arbor and driven by means of a toothed pinion 35 which is desirably formed integral with the shaft 25.

The feeding movements of the saw are regulated by revolubly moving the same through the agency of a feed screw 36 engaging in the worm wheel element 28 of the aforesaid rotary frame; said feed screw is journaled in bearings 37 provided on the frame member 7, and is manipulated from one side as by means of a crank handle 38.

The shaft 25 is rotated by means of a motor, indicated by broken lines M in Fig. 1. Said motor is desirably of the pneumatic type, one end of its shaft being coupled with the polygonal end 25 of shaft 25, such coupling serving to support one end of the motor while its other end is supported as by the provision of a standard 40 projecting upwardly from the rear end of the frame member 7 by the finger 1O engaging over the work or bolt B which is to be cut off. For supporting the rear end of the frame we employ extensible braces, one on each side, each consisting of a rod 41 having at one end an eye 42 whereby it is hingedly connected to an apertured lug 43 depending from the adjacent side of the frame. Said rod extends into a tube 44 provided with a tapering screw-threaded extremity 45 which engages in a tapering screw-threaded hole of a nut 46.v The tapered end 45 of a rod is furthermore provided with longitudinal slots 47 so that by screwing down the nut 46 the tube 44 may be clamped in adjusted position with respect to the associated rod 41.

Rigidly secured to the end of the tube 44 remote from its tapered end is a rod element 48 terminating in a point 49 adapted to penetrate in the vessel wall or frame member 6. The rod member 48 is also provided with .a branch element 50 which may be utilized to cause the penetrating point 49 to become engaged by driving with a hammer against the face 50 Said branch may also .be utilized to disengage said penetrating point by using a pry bar against its face 50 The operation of the invention is as follows The operator first engages the hooked finger 10 over the end of the bolt B so as to have the end or face 9 of the head element 8 bear against the frame 6. He then adjusts and then regulates the lever 13 by means of screw 15 to cause the jaw 12 to firmly grip the bolt B. The motor is'then actuated to drive the shaft 25, thereby effecting through the medium of the gears 35 and 34the rotation of the saw 31.

The operator then manipulates, tln ough crank handle 38, the screw 36 to revolve the saw'in the direction indicated by arrow y in Fig.3; this may be done quite rapidly until the saw is brought into cutting relation with the bolt and thence by a slower movement until the saw is progressively carried through the bolt to cut the same off.

The invention is quite simple in its construction and operation, and affords an extremely efficient manner of performing an operation which hitherto has been done by the use of a so-called hand hack-saw or other manually operated tools.

' What we claim, is

1. A machine for cutting'otf bolts, comprising a machine frame, a saw mounted for reciprocatory movementsthereon, means to effect such movements of the saw, means to rotatethe saw, a clamping jaw provided on the frame, a lever pivotally connected to the frame and having a jaw element thereon, and means for actuating said lever to cause the jaw element thereof to cooperate with the first-named jaw to clamp the frame to a bolt which is to be out 01f.

2. A machine for cutting off bolts, com- 3. A machine for cutting off bolts, comprising a ClI'CHlZLD'SiLW, an arbor therefor, a rotary frame carrying said arbor eccentrically of the axis of said frame, a powerdriven shaft extendingaxially through the latter, gears operatively connecting said .7

shaft with the arbor for driving the saw, a machine frame supporting said rotary frame and the shaft, bolt-clamping means for securing the machine to the bolt, and adjustable means cooperating with said boltclamping means for supporting the machine frame in operative position.

4. A machine for cutting off bolts, com-' prising a circular saw, an arbor therefor, a rotary frame carrying said arbor veccentrically of the axis of said frame, adriving shaft extending axially through the latter, gears operatively connecting said shaft with the arbor for rotating the saw, a machine frame supporting said rotary frame and the shaft, said machine frame having at GEORGE P. RI'SSER. ALBERT P. WILLIAMS.

Witnesses PIERRE BARNES, PETERSON.

Copies of this patent may be obtained for five cents each, by 'addressing. thev Commissioner of Patents.

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