US1029773A - Mortising-machine. - Google Patents

Description

L. A. SUNDAY.

MORTISING MACHINE. APPLICATION FILED FEB. 24, 1911.

Patented June 18, 1912.

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BY- W coLun nmA PLANEGRAPH co., WASHINGTON, D. c.

L. A. SUNDAY.

MOBTISING MACHINE.

APPLIOAIION FILED FEB. 24, 1911.

1,029,773. Patented June 18,1912.

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Attorney COLUMmA PLA'NOORAPH (IO-.WASHINDTON. n. c.

L.A.SUNDAY.

MORTISING MACHINE. APPLICATION FILED FEB. 24, 1911. 1,029,773, Patented June 18, 1912.

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COLUMBIA PLANOGRAPTI co..W/\sH|NcTON. D. c.

L. A. $UNDAY.

MORTISING MACHINE.

APPLICATION FILED FEB. 24, 1911.

Patented June 18, 1912.

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LEE A. SUNDAY, F RICHMOND, VIRGINIA.

MonrisINe-MAcHINn- Specification of Letters Patent.

Application filed February 24, 1911.

Patented line 18, 1912. Serial No. 610,541.

To all whom it may concern:

Be it known that I, LEE A. SUNDAY, a citi- -Zen of the United States, residing at Richmond, in the county of Henrico and State of Virginia, have invented certain new and useful Improvements in Mortising-Machines, of which the following is a specification.

This invention relates to portable mortising machines, and is particularly adapted and intended for use on doors and other building structures, but capable of use in other relations if desired.

The object of the invention is to provide an improved portable machine which can be moved to the place of use, said machine having an adjustable cutter which may be located to do the work desired, according to local conditions.

The machine is characterized by improve is a horizontal sectional View on the line 2-2 of Fig. 1. Fig. 3 is a front elevation. Fig. 4 is a central vertical longitudinal section of the machine.

Referring specifically to the drawings, 1 indicates an upright frame suitable to support the parts hereinafter described, the uprights being braced by pieces 2, and pro A table 3 is supported at the rear end. 4 is a motor mounted on the flooring ofthe frame and belted to a loose pulley 5 on shaft 54, and this pulley may be made tight on the shaft by a clutch 6 operated by a lever 59 which is pivoted to the frame at 60. The shaft 54 is supported by bearings 58 fastened to the frame 1, and said shaft has on one end a sprocket 7 belted to a sprocket 8 mounted on a cross shaft 63 which may be driven by cranks 9. The shaft 54 has on its other end a bevel gear 57 which meshes with bevel gear 49 on the lower end of a vertical shaft 37 which is supported by bearings 48 7 fastened to-the frame.

The shaft 37 has a key Way out its entire "length which receives the key 37 (Fig. 2) which turns the worm gear 38 which is slidable up and down on the shaft. This gear meshes with a worm pinion 55 on the worm 39 which is supported by bearings 56 on the vertically movable carriage 13 which slides on guides 22 fastened to the frame 1. The Worm 39 engages a worm pinion 40 fast on a cross shaft 16 which has a key along its entire length and is supported by bearings 15 on the carriage 14 which is slidable back and. forth horizontally. The shaft 16 eX- tends across adjacent to the rear end of the cutter guide 18 which consists of a metal plate or arm which supports the chain cutter 19, said chain being driven by a sprocket 17 mounted on the shaft 16. guide 18 is held in a transversely movable carriage 19 by means of set screws 21, the carriage 19* being mounted in guides on the sliding carriage 14 which as stated is slidable back and forth lengthwise to advance or retract the cutter, said carriage being mounted in guides on the vertically movable carriage 13. A screw 20 extends across the carriage 14 and engages carriage 19 to shift the same. The screw 14 is mounted on the carriage 13 by means of cross pieces 61 and 62 at opposite ends thereof, and engages carriage 14 for the purpose of advancing or retracting the same. This screw, 14,

has on its rear end a gear which meshes with a gear 26 on shaft 30 which is supported by bearings 31 and 32 on the carriage 13. The shaft30 has thereon a loose worm gear 27 whichis operated by clutch 28, on the shaft, and meshes with a slidable worm pinion 29 on the upright shaft 37. The clutch 28 is operated by'lever 33 (Fig. 3) pivotally connected to a shaft or rod 34, which carries adjustable stops 35 and which extends rearwardly as indicated at 36 for hand operation when desired, the rod being shiftable lengthwise and supported in guides on the cross pieces 61 and 62. For holding the work clamps 52 are provided, at the front of the machine, operated by right and left screws mounted in bearings 51, and geared together by gears 53 and adapted to be driven by a crank which may be applied to the squared end of one screw, to move the clamps toward or from each other, s a1d clamps traveling on the screws and being supported thereby, the clamping arms having threaded holes through which the screws extend.

The carriage 13 is raised and lowered by a vertical screw 41 which works in a nut OFFICE. A

The cutter gear 42 meshing with bevel pinion 44 mounted on shaft 45 and operated by crank '46,

which is supported in a bearing 47, the bevel gear 42 being held in place by yoke 43.

The machine may be driven by either hand or motor. When driven by hand, the power is communicated from the crank 9 through the sprocket 7 to the shaft 54. When driven by motor, the clutch 6 is thrown in to drive said shaft 54. From said shaft 54 power is communicated through the bevel gears 49 and 57 to the shaft 37. This drives the gear 38, pinion 55, worm 39, gear 40, shaft 16, and sprocket 17 which drives the chain cutter 19. The shaft 37 also drives the shaft 30 by means of the gears 29 and 27. The shaft 30 by gears 26 and 25 drives the feed screw 14 which advances the carriage 14 carrying the cutter. The rate of feed of the cutter is governed by the screw 14 which resists" supported thereby, to the right or left, to

adjust it to the work. By means of the screw 41 and the devices for operating the same the carriage 13 and the .parts sup-- ported thereby are raised or lowered to adjust the cutter vertically, and in this opera- .tion the gears 29 and 38 slide up or down to corresponding position on the shaft 37. The clutch 28 being engaged, the cutter carriage 14 is automatically advanced as the cutter is driven. The adjustable stops 35 control the depth and are set in advance on the rod 34 according to the depth desired. I provide two stops 35, one on one side and one on the other side of the lever 33, because it would be impossible to shift either one of them by the lever 33. Only one is used at a time, and the one to be used is turned on the rod 34 to project upwardly in position tobe struck by the carriage 14. For a shallow mortise the stop at the right in Fig. 1, that is the one toward the rear of the machine, is, turned up and set, the carriage 14 being for this operation retracted to the rear end of the screw 14*, instead of in the advanced position shown in Fig. 1. For a deep mortise the right hand stop 35 is dropped, and the left hand stop is set up in position to be struck by the carriage 14. When the carriage advances it will strike one of these stops and shift the rod 34 forwardly. This will open the clutch 28 and stop the feed. The carriage 14 may then be drawn back by revolving the screw 14 backwardly, bymeans of a hand crank applied to the rear end thereof, and the machine will. then be ready for the next operation, at which time the operator will pull back the rod 34 by means of the handle 36 thereby throwingin the clutch 28-a-nd start- I "ing'the feed. The feed is automatic only when the clutch 28 is thrown in, hence the retraction of the carriage 14 does not interfere with the cutter drive, as the worm gear 27 will then turn idly on the shaft 30.

In use, the operator pushes the machine to the edge of the door or other object to be mortised, screws up the clamps 52, runs back the carriage 14 by hand until the cutter clears the object, then turns the crank46 to raise or lower the carriage 'to theheight desired, 7 starts the motor, and throws in the clutches 6 and 28. This drives the shaft 37 which drives the worm 39 and the cutter shaft 16 and also drives thefeed screw 14*, anduthe carriage is automatically fed in until it strikes the stop 35 and cuts off the feed; the carriage is then. run back from the work until the cutter clears the mortise, and the machine may then be moved to another place for the next operation. If hand power is used the clutch '6 is thrown out and the crank 9 turned. The handles 10 at the rear end of the machine enable it to be moved about on its casters 65.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent is I 1. In a mortising machine, the combination of an upright frame, a clamp at the front end thereof, a vertically adjustable carriage in the frame, and above the clamp,

a horizontally movable cutter carriage mounted on said carriage and slidable thereon toward and from the front end-of the frame, a cutter mounted on said cutter carriage and projecting beyond theend of the frame and above the clamp, in position tooperate on work. held byrthe' clamp, said clamp having-members at opposite, sides of the plane of verticalmovement of the cutter,

whereby lateral displacement of the work is prevented, and being open at the front to receive the work 'therebetween..

drive said shaft, a horizontally movablecutter carriage mounted in the frame, a cutter carried thereby, gearing between the said shaft and the cutter to drive the latter, including a horizontal shaft and a gear movable along the same as .the carriage is advanced or retracted, and. gearing between the vertical shaft and the carriage, to feed the latter, said gearing including a horizontal shaft, and a feed screw operated thereby. l q

3. In a mortis'ing machine, the combination of an upright frame, a shaft therein,

means to drive said shaft, a supporting car-' riageinthe frame, adjustable longitudi nally of said shaft, a movable cuttercarg riage mounted on said supporting carriage,

a cutter carried by the cutter carriage, gearing between the shaft and the cutter carriage to feed the latter, and gearing between the vertical shaft and the cutter, to drive the latter, each of said gearings including a wheel shiftable along the shaft according to the adjustment of the supporting carriage.

4. In a mortising machine, the combination of a frame, a vertical shaft mounted therein, means to drive said shaft, a vertically adjustable supporting carriage in the frame, a horizontally movable cutter carriage on the supporting carriage, a cutter carried by the cutter carriage, gearing between the vertical shaft and the cutter, said gearing including a worm wheel slidable up and down on the shaft as the supporting carriage is raised or lowered, a worm geared to said worm wheel and extending horizontally parallel to the line of movement of the cutter carriage, gearing between said worm and the cutter, and feed gearing between the vertical shaft and the cutter car riage, including a screw engaging the cutter carriage to advance or retract the same, a horizontal shaft geared to said screw, a worm wheel slidable up and down on the vertical shaft and a worm gear and clutch on the horizontal shaft, said worm gear meshing with said worm wheel.

5. In a mortising machine, the combinetion of a feed carriage and means to advance and retract the same, a chain cutter mounted on said carriage and movable back and forth therewith, and means to drive the cutter including a worm extending parallel to the line of movement of the carriage, and a cross shaft supported by the carriage and operatively connected to the chain, and a worm gear on the cross shaft, engaging said worm to drive the shaft.

6. In a mortising machine, the combina tion of an upright frame, a vertically adj ustable supporting carriage therein, a horizontally movable feed carriage mounted on the supporting carriage, a cutter mounted on the feed carriage and adjustable laterally thereon, means to advance and retract th feed carriage, and means to drive the cutter.

In testimony whereof, I afiix my signature in presence of two witnesses.

LEE A. SUNDAY.

Witnesses JAMES T. Lnwrs, L. H. DREW.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington. D. G.

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