US1044904A

US1044904A - Mortising-machine.

Info

Publication number: US1044904A
Application number: US68007412A
Authority: US
Inventors: Carl Nelson
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-02-26
Filing date: 1912-02-26
Publication date: 1912-11-19
Anticipated expiration: 1929-11-19

Description

G. NELSON. MORTISING MACHINE. APPLICATION FILED IBB.26. 1912.

Patented Nov. 19, 1912.

3 SHEETSSHEET 1.

COLUMBIA PLANOGRAPH 60-, WASHINGTON. D. c.

G. NELSON. MORTISING MACHINE. 'APPLIOATION FILED PEB.26, 1912.

1,044,904. I Patented Nov. 19, 1912.

3 SHEETS-*SHEBT 2.

' COLUMBIA PLANOGRAPH ISO-,WASHINOTON. u- C.

G; NELSON.

MORTISING MACHINE.

APPLICATION FILED PEB.26, 1912.

1,044,904, Y Patented Nov. 19, 1912.

3 SHEETS-SHEET 3.

FIG. 4-.

WIT/M5558 mum/70R 4,. W M M a Mm 4 M4 BY ATTX COLUMBIA PLANOGRAPH 60., WASHINGTON, D. c.

u TED STATES PilENT enrich.

CARL NELSON, F ROCKFORD, ILLINOIS.

MORTISING-MACHINE.

To all whom it may concern:

Be it known that I, CARL NELsoN, a citizen of the United States, residing at Rockford, in the county of l/Vinnebago and the State of Illinois, have invented certain new and useful Improvements in Mort-ising-Machines, of which the following is a specification.

This invention relates to improvements in mortising machines and more particularly to an attachment for such wood working machines as are used in finishing doors.

It comprises means for mortising the stiles of doors for the reception of the tenons of the cross pieces that are to be secured thereto. Means for automatically regulating the length of the mortise are provided and also means for spacing apart the several mortises to be formed in any one or in any number of similar stiles that may be fed into the device.

Efiiciency and accuracy of operation are among the objects attained.

With the foregoing and other objects in view the invention consists in the combina' tion and arrangement of parts to be hereinafter fully described in the following specification, pointed out in the claims and illustrated in the accompanying drawings which form a part of the specification and in Which- Figure 1 is a plan of my improved mortising machine applied to a type of wood working machine. Fig. 2 is a section taken on line 33 of Fig. 3. Fig. 3 is a plan of my machine proper. Fig. 4 is a side elevation of my machine showing a portion of the wood working machine. Fig. 5 is an end elevation of my machine. Fig. 6 is an enlarged detail of the gear that automatically regulates the length of the mortise to be formed. Fig. 7 is an end elevation of Fig. 6.

Like reference characters indicate corresponding parts throughout the several views.

1 is the bed of a wood working machine; 2, 2" and 3 are power operated planers carried by that machine and 4, 5 and 6 are feed rollers. Upon the bed 1 of the machine the door stiles 7 are supported upon edge as shown ready to be mortised and they are forced by the action of the rollers Specification of Letters Patent.

Application filed February 26, 1912.

Patented Nov. 19, 1912.

Serial No. 680,074.

4, 5 and 6 toward my machine. My ma chine comprises a circular power operated saw 8 which is supported upon a suitable shaft 9 that is provided with a pulley 10 to receive power from a suitable belt and that is journaled in bearings 11 and 12 of an apron 13 that is carried upon a pivot 14 journaled in suitable supports or boxes 15 and 16. i

17 and 17 are plates provided with angular slots 18, 18 respectively and with angular terminally curved slots 19 and 19, respectively, the said plates being secured, respectively, to the bearings 11 and 12 by

bolts

20 and 20.

22 is a bar connecting the slotted plates 17 and 17 through the medium of pins 21 and 21 carried at its opposite ends. Normally the pins 21 and 21 engage their respective plates 17 and 17 in the curved extremity of the angularly slotted portions of said plates.

23 is an angular link disposed upon a pivot 24 and apertured at one end for engagement with a lug 25 carried by the bar 22 while the other end of the link engages a short arm 26 that is connected to a rack 27 that is supported by an arm 28 of a beam 29. The rack 27 is secured to the beam 29 through the medium of a bolt 31.

32 is a gear block mounted upon the rack 27 and the beam 29. This block is secured to the rack through the medium of a set screw 33 and is provided with a strap 34 bolted thereon as at 35, 35 and 36, the latter bolt passing through the said strap and entirely through the gear block and serving as an axis for a gear 37 retained thereby within the said block in engagement with the teeth of the rack 27. 38 is another gear mounted within the block 32 upon a pin 39 and engaging the gear 37 and provided wit-h a spring-controlled pin 40 which normally projects beyond the periphery of the said gear 38. The strap 34 previously described passes beyond the block 32 to which it is secured and is secured by means of links 41, 41 to

guides

42 and 43 that are adapted to receive and keep in alinement the door stiles 7 as they arrive at this point.

44 is a geared block slidably mounted upon the rack 27 and provided with a gear 45 in mesh with that. rack and with a pin t6 which is fastened to the gear 45 by a pin 4C7. The block 14L may be secured to the rack at any desired position through the medium of a set screw 48.

Operation: The door stiles under operation are placed upon the bed 1 of the machine beneath the rollers 4t, 5 and 6 by which they are driven toward my machine. The stiles are placed end to end as shown and are terminally mortised by my saw 8. This saw is raised and lowered vertically by the automatic action of my device. I11 Fig. 3 my saw is shown in the operation of mortising a stile. The saw has been lowered into operative position through contact of the end of the door stile with the end of the spring-controlled pin 40 and pressure on that pin rotated the gear 38 in a direction. opposite to that of the stiles travel and gear 38 in mesh with gear 37 rotated it in the direction of travel of the door stile and that gear in mesh with the rack 27 drew the same in the same direction the door stile was traveling thus drawing the link 23 in the same direction which draws the bar 22 clownwardly thus bringing the saw into contact with the work. After the end of the stile passes a certain distance beyond the pin 10, leaving it in the position shown in Fig. 3, it encounters the pin 46 of block 1 1 and forces it in the direction of travel thus rotating the gear 45 in that direction and this gear, being in mesh with the teeth of rack 27, forces that rack in the opposite direction thus rotating the gear 37 in that direction and the gear 38 in a direction opposite to the stiles until the pin 10, having overcome the pressure of its spring against the stile, again lies in receptive position for the end of the next stile in the line when the operation just described is repeated. The saw 8 will continue to cut or mortise the stile from the time the end of one stile has left the pin 41-0 until it has encountered and left the pin 16 when the saw will again be in inoperative position. The distance between the gear blocks 32 and 1 1 will determine the length of the mortise to be cut in either end of the stile. WVhen the link 23 is so pressed as to raise the bar 22 the pins 21 and 21 of this bar are drawn out of the curved end of the slot 19 into the straight portion of that slot when these pins or bolts will raise the plates 17, 17 and through their connection with the bearings 11 and 12 will raise them and the apron 13 on its pivot thus raising the saw out of operative position.

l/vhat is claimed is:-

1.. In a machine for producing mortises, the combination, with a suitable work-carrying bed provided with feed rollers, of a power operated saw pivotally supported above said bed, a rack movably supported beside said bed, connection between the said rack and the said saw whereby the former is caused to oscillate the latter upon its pivot, actuating means fixedly mounted upon said rack for contact with the work carried by the said bed for moving the former a limited distance in one direction and actuating means adjustably mounted upon the said rack for subsequent contact with the work carried by the said bed Whereby the said rack is moved a limited distance in the opposite direction.

2. In a machine for producing mortises, the combination, with a suitable work-carrying bed provided with feedrollers, of a power operated saw pivotally supported above said bed, a rack movably suported beside said bed, connection between the said rack and the said saw whereby the former is caused to oscillate the latter upon its pivot, a gear block fixedly mounted upon the said rack, enmeshing gears mounted in said block one of which engages the said rack, means carried by one of the said gears for engaging with the work of the said bed whereby the said gear is actuated and means adjustably mounted upon the said rack for subsequent engagement with the work of the said bed whereby the said rack and connections are returned to their initial position.

3. In a machine for producing mortises, the combination, with a suitable work-carrying bed provided with feed rollers, of a power operated saw pivotally supported above said bed, a rack movably supported beside said bed, connection between the said rack and the said saw whereby the former is caused to oscillate the latter upon its pivot, a gear block fixedly mounted upon the said rack, enmeshing gears mounted in said block one of which engages the said rack, means carried by one of the said gears for contact with the work of the said bed whereby the said gear is actuated, a gear block adjustably mountedupon the said rack and a pin-provided gear mounted in said block engaging the said rack and capable of subsequent contact with the work of the said bed. 4. In a machine for producing mortises, the combination, with a suitable work-carrying bed provided with feed rollers, of a power operated saw pivotally supported above said bed, a pair of angularly slotted oppositely-disposed connected plates, connection bet-ween the said plates and the said saw whereby the former may oscillate the latter upon its pivot, a pivotally supported ing gears mounted in said block one of which engages the said rack, means carried by one of the said gears for contact with the work of the said bed whereby the said gear is actuated, a gear block adjustably mounted ture in the presence of two subscribing Witupon the said rack and a pin-provided nesses. gear mounted in said block engaging the said rack and capable of subsequent contact CARL NELSON with the Work of thesaid bed. Witnesses:

In testimony that I claim the foregoing GUST NELSON, as my own I have hereto affixed my signa- G. W. ALDEN.

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

Washington, D. 0.