US2913021A

US2913021A - Multiple woodworking tool

Info

Publication number: US2913021A
Application number: US646357A
Authority: US
Inventors: Fred D Warren
Original assignee: Individual
Current assignee: Individual
Priority date: 1957-03-15
Filing date: 1957-03-15
Publication date: 1959-11-17
Anticipated expiration: 1976-11-17

Description

Nov. 17, .1959 F. D. WARREN MULTIPLE WOODWORKING TOOL 4 Sheets-Sheet 1 Filed March 15, 195? Nov. 17, 1959 F. D. WARREN 2,

MULTIPLE WOODWORKING TOOL Filed March 15. 1957 4 Sheets-Sheet 2 FIG. 2.

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I U M ATTORNEYS.

United States PatentO This invention relates to power tools, and more particularly to a combination woodworking tool which may be set up to perform various different functions.

A main object of the invention is to provide a novel and improved multiple woodworking tool which is simple in construction, which is easy to operate, and which is organized so that it may be quickly set up for performing different types of work, such as sawing, turning, planing, sanding, or the like.

A further object of the invention is to provide an improved multiple-function, power-operated woodworking tool which is relatively inexpensive to manufacture, which is durable in construction, which may be easily set up to perform various different desired operations, and which is relatively compact in size.

Further objects and advantages of the invention will become apparent from the following description and claim, and from the accompanying drawings, wherein:

Figure l is an end elevational view of an improved combination woodworking tool constructed in accordance with the present invention, shown set up for sawing, the full line showing indicating the table member in the operating position and the dotted line showing indicating the table member swung upwardly to the inoperative position.

Figure 2 is a front elevational view of the tool shown in Figure l.

Figure 3 is a fragmentary transverse vertical cross sectional view taken on the line '33 of Figure 2.

Figure 4 is an enlarged fragmentary vertical cross sectional view taken on the line 4-4 of Figure 1.

Figure 5 is a fragmentary front elevational view of the upper portion of the combination tool, shown set up for wood turning.

Figure 6 is a fragmentary transverse vertical cross sectional view, similar to Figure 3, but showing the tool set up for wood planing.

Figure 7 is a fragmentary front elevational view of the head stock portion of the tool, shown set up for use as a belt sander.

Figure 8 is a transverse vertical cross sectional view taken on the line 8-8 of Figure 7.

Referring to the drawings and more particularly to Figures 1. to 4, the tool comprises a main supporting frame 11 consisting of four supporting

legs

12, 13, 14, and 15 to the top ends of which are supportingly secured a pair of opposing

longitudinal channel bars

15 and 16. Thus, at the left side of the frame, the top ends of the legs 12 and 13 are rigidly secured to a transversely extending horizontal plate member 17 and at the right end of the frame, a transversely extending .plate member 18 is rigidly secured to the bottom flanges of the channel bars 15' and 16. The top ends of the legs 12 and 13 are secured to the plate.17 and also secured on said plate 17 are the left ends of the channel bars 15' and 16. The right endsflof the channel bars 15' and 16 are secured at their bottom flanges to the top ends'of the

legs

14 and 15, by rigidly fastened to the transverse plate member 18 "ice.

which, in turn, is rigidly secured to the top ends of the

legs

14 and 15.

Rigidly secured to the left ends of the

channel bars

15 and 16, as viewed in Figure 2 is an upstanding hollow head stock bearing bracket 19 in which is rotatably mounted the horizontal head stock shaft 20. As shown, the shaft 20 is rotatably supported in respective ball bearing units 21 and 22 provided at the opposite ends of the upper portion of the bearing bracket 19, the shaft being further provided with a thrust bearing 23 at the right side of the housing 19, as shown in Figure 4. The shaft 20 is provided at its right end with a threaded portion 24 adapted to receive a conventional chuck, for example, the saw blade chuck 25 illustrated in Figure 4.

Secured on the left end of the shaft 20 is apulley 26 which is coupled by a belt 27 to a stepped pulley 28 (Figure 2) mounted on an auxiliary horizontal shaft 29. The shaft 29 is journaled in depending

brackets

30 and 31 secured to the frame 11 of the tool. Thus, the bracket -31 is secured to the bottom surface of the transverse horizontal plate member 17, as shown in Figure 3. The bracket 30 is secured to a transversely extending vertical end wall member 33 rigidly secured to the left ends of the

channel bars

15 and 16, as viewed in Figure 2, and thus forming part of the frame 11 of the tool.

Designated at 34 is a motor support which is hinged at 35 to a horizontal bottom plate 36 secured to the lower end portions of the

legs

12, 13, 14 and 15, for example, .On bottom flanges 37 provided on the legs, the plate member 34 having mounted thereon an electric motor 38 provided with a stepped outputpulley 39, which is coupled by a belt 40 to the stepped pulley 28.

As will be readily apparent, the

belts

40 and 27 may be adjusted on the

stepped pulleys

28 and 39 to provide a desired operating speed of the head stock shaft 20.

Designated at 42 is a shaft locking member which is slidably engaged between a pair of inwardly directed flanged opposing

vertical guides

43, 43 defining a vertical guideway in which the vertical bar member 42 is slidably retained, the top end of the vertical bar member 42 being formed with a notch 44 (Figure 4) which is lockingly engageable with a hexagonal portion 45 formed on the shaft 20. A manually operable lever 46 is pivoted at its intermediate portion to the end wall of the hollow head stock shaft support 19, as shownat 48 (Figure 1), the end of the lever 46 being pivotally connected at 49 to the lower end of the bar 42, whereby the bar 42 may be elevated by rotating the lever 46 clockwise, as viewed in Figure l, to thereby engage the notch 44 with the hexagonal portion 45, and thus to hold the shaft 20 against rotation, whereby a chuck may be removed from or engaged on the threaded end portion 24 of the shaft. This enables the shaft 20 to be positively heldagainst rotation while a chuck, such as the chuck 25, is either engaged on or disengaged from the threaded shaft end 24.

Pivoted at 50 to the vertical transverse plate member 33 is a clutch lever 51 which is connected at its inner end by a link 52 to a cam arm 53 rigidly connected to a clutch cam 54 journaled on the bottom supporting plate 36 and disposed beneath the hinged motor-supporting plate 34. Thus, the cam 54 is mounted on a horizontal shaft 55 which extends beneath the plate 34, whereby the cam 54 maybe rotated to engage the plate 34 and to lift the plate 34 sufficiently to loosen the belt 40, thus preventing torque from being transmitted through said belt from pulley 39 to pulley 28. This may be accomplished by rotating the'lever 51 in a clockwise direction,

as viewed in Figure l,to thereby rotate cam 54 clockwise to a dead center position, in which position the hinged plate 34 is elevated sufficiently to loosen the belt 40, as above described, and to prevent the pulley 28 from being driven by the pulley-39. t

As shownin Figure 4, a circular saw blade 55 mounted the shank 56 to clampingly secure the blade 55 on the main body of the chuck.

Rigidly secured to the rear edge of the transverse plate member33 and to the rear margin of the horizontal plate member 17 is a longitudinally extending, vertical rear plate member 60 of substantial height. Designated at 61 is a" saw table comprising a horizontal main plate 62 and a pair-of

leaf members

63 and 64 hinged to the bottom surface of the main plate 62 at 65 and 66, as'shown in Figure 3. The rear leaf member 63 may. be clamped tothe inside surface of the upstanding rear frame plate 60, asbymeans of a pair of vertically spaced

studs

67 and 68 secured in the rear plate member 60 and projecting inwardly therefrom, and engaged through apertures' provided in the rear leaf member 63. Respective wing nuts 69 are threadedly engaged on the vertically spaced

studs

67 and 68 to clamp the leaf member 63 to the rear vertical plate 60. The forward leaf member 64 is formed with avertical slot 70 opening at its bottom edge in which is received a stud 71 provided on the web of the channel bar 15, as clearlyshown in Figure 3, a wing nut 72' being engaged on the stud 71 to adjustably clamp the vertical leaf member 64'to the channel bar 15.

The top plate 62 is provided with a suitable slot through which extends the upper portion of the saw blade 55, allowing the saw blade to rotate freely, whereby a piece of wood may be severed by the blade as the wood is moved against the rotating blade edge.

The top plate 62 is formed with a longitudinally extending channel 74 (Figures 1 and 2) in which is slidably positioned a fence member 73 having an upstanding abutment portion extending parallel to the exposed portion of the saw blade 55, the fence member 73 being adapted to serve as a guide for supporting a piece'of wood at a desired distance from the saw blade as the piece of wood is moved against the blade. Suitable clamping means, not shown, may be provided for locking the fence member 73 to the top plate 62 of the saw table attachment at an adjusted position from the saw blade 55.

When the saw table is not being used, it may be elevated to an out-of-the-way position, by loosening the wing nut 72, whereby the front leaf 64 may be lifted clear of the stud 71, and'whereby the saw table may be elevated and folded rearwardly, exposing the head stock support 19 and the associated live end of the shaft 20 which may be'employed'as a head stock spindle.

Secured on the upper portion of the left margin of the leaf member '64 is a'flauged guard bracket 75 which is of sufficient vertical height and lateral extent to cover'the forwardedge portion of the saw blade 55, as is clearly shown in Figure 2.

Rigidly secured to the rear margin-of the table top plate 62 is an upstanding post member 76 to which is pivoted 'a rod 77 integrally formed with a channel-shaped saw guard 78 arranged in the plane of the saw blade 55 and being adapted'to overlie the exposed top of the saw blade, as illustrated in Figure 3. The guard member 78 ispreferably of transparent plastic material, or any-other suitable rigid materiaL- As shown in Figure 3, the'guard member 78 hasdownwardlyand rearwardly. inclined front and rear edges 79 and 80, the front edges 79 being engageable by a piece of material as the material is moved against the saw blade, whereby the guard member 78 is automatically elevated to allow the material to engage the edge of the saw blade.

Secured on the right end portions of thechannel bars 15 and 16 is a conventional tail stock member 81 which may be employed to receive a tail stock center 82, in the manner illustrated in Figure 5, when the tool is to be employed for turning a wood piece 83. To employ the tool for this purpose, the saw table attachment may be elevated to its inoperative position, as above described, and a spur center 84 may be mounted on the driving end 24 of shaft 20, by means of a suitable chuck. A steady rest 85 is provided, said steady rest being secured on the channel bar as by a fastening bolt 86, the steady rest having the usual tool support 87 for holding a lathe tool in the proper position forperforining the desired cutting operation oirthe piece 83 being'turned.

As shown in Figure 6, the tool may be employed for wood planing by providing a" planing table 61', generally similar to the saw table 61 except that the top plate member 62 thereof is formed with a slot 88 located so that a planing assembly 89 mounted on the live end 24 0f shaft will extend therethrough, as illustrated. The planing table 61' is provided with the rear leaf member 63' identical with the leaf member 63 of Figure 3, which may be thus secured to the rear vertical plate 60' by means of the wing nut 69. A-front leaf member 64 is hinged to the bottom of the planing table top plate and the main frame of the machine by means of a fastening bolt 92 which extends through the bottom plate 93 of the bracket and the horizontal frame plate 17, as shown. The planing attachment has a main shaft 94 which is coupled in any suitable manner to the end 24 of the drive shaft 20, being supported in alignment therewith by the bracket 93. The usual planing cutters 95 are secured on the planing attachment shaft 94 in any suitable manner.

As in the case of the saw table attachment previously described, the planing table 62' may be elevated to an out-of-the-way position to provide access to the driving shaft end 24, Whenever required. Thus, the tool may be employed for wood turning, with the'planing table attached thereto, but lifted to its elevated, out-of-the-way position.

Referring now to Figures 7 and 8, a belt sanding'attachment may be mounted on the channel bars 15' and 16 and may be drivingly coupled to the'threaded end 24 of shaft 20 in the same manner as previously described in connection with the various other attachments.

The sanding attachment 100 comprises'a bottom plate 101 engageable on the top flanges of the channel bars 15' and 16, said bottom'plate 101 having a depending positioning rib 102 receivable between the edges of the top'flanges of said channel bars. A fastening belt 103 is engageable through the bottom plate 101 and a washer plate 104 engaged with the bottom flanges of the channel bars 15' and 16, as shown in Figure 8, said washer plate having an upstanding rib' 105 receivable between the edges of the bottom flanges of the channel bars.

The sanding attachment 100 has the

respective side walls

107 and 108 rigidly connected to the bottom wall 101, said sidewalls extending'forwardly a substantial distance andbeing rigidly connected 'at their bottom inatgins by atransverse' plate'member 109. At their outer ends the

walls

107 and 108 are rigidly connected'bya vertical plate member 110 throughwhich extend'a pair of shouldered adjusting screws 111 which are threadedly engaged with respective nut members 112. Connecting the nut members 112 is a shaft 113 on which is journaled'a roller' 114 supporting the forward end'of a sanding belt 115. The rear parties of the engages around a roller 116 which is journaled between the rear portion of the

walls

107 and 108, parallel to the roller 114, and mounted on a shaft 117. The shaft 117 is drivingly coupled by suitable conventional coupling means 118 to the threaded end portion of the shaft 20.

Secured on the rear top portions of the

walls

107 and 108 is the horizontal connecting bar 119 to the forward margin of which is rigidly secured the upstanding stop plate 120.

As will be readily apparent, when thebelt sanding attachment is mounted in the manner illustrated in Figures 7 and 8, the attachment may be employed for sanding pieces of wood or other objects in the usual manner.

It will be readily understood that various other attachments may be employed with the tool above described, the attachments being mounted on the frame 11 of the tool and being suitably coupled to the drive shaft 20 similar to the attachments shown in Figures 1 to 8 of the drawings.

While a specific embodiment of an improved multiple purpose power driven woodworking tool has been disclosed in the foregoing description, it will be understood that various modifications within the spirit of the invention may occur to those skilled in the art. Therefore, it is intended that no limitations be placed on the invention except as defined by the scope of the appended claim.

What is claimed is:

In a combination power driven woodworking tool, a supporting frame, an upstanding bearing bracket on said frame, a horizontal drive shaft journaled in said bracket, means for connecting a rotary woodworking tool to one end of said drive shaft, an electric motor mounted on said frame, means drivingly coupling said motor to the other end of said drive shaft, upstanding plate means on the frame extending parallel to and spaced rearwardly from said drive shaft, a table member having a pair of plate-like leaf elements hinged thereto on spaced parallel hinge axes, means for securing one of said leaf elements to said upstanding plate means, the other leaf element being formed with a vertical slot opening at its bottom edge, means defining a vertical clamping surface on the forward portion of said frame, a threaded fastening member mounted on said vertical clamping surface and located to extend through said slot, and a clamping nut on said fastening member formed and arranged to clampingly engage said other leaf element and adjustably secure said other leaf element to said vertical clamping surface to support said table member in a substantially horizontal position spaced above the axis of said drive shaft, said table member being formed with an aperture over the axis of said drive shaft, whereby the upper portion of a rotary tool connected to said drive shaft may extend through said aperture, said leaf elements being swingable to positions adjacent said table member, whereby the table member may be at times swung upwardly to an inoperative position when said other leaf element is detached from said vertical clamping surface.

References Cited in the file of this patent UNITED STATES PATENTS 183,181 Levy Oct. 10, 1876 1,860,071 Bodkin May 24, 1932 2,089,362 Haas Aug. 10, 1937 2,157,241 Manning May 9, 1939 2,523,680 Christie Sept. 26, 1950 2,662,566 Kurschner Dec. 15, 1953 2,747,626 Goldschmidt May 29, 1956