US2592384A

US2592384A - Fence for jointers

Info

Publication number: US2592384A
Application number: US205812A
Authority: US
Inventors: William B Boice
Original assignee: BOICE CRANE Co
Current assignee: BOICE CRANE Co; BOICE-CRANE Co
Priority date: 1951-01-12
Filing date: 1951-01-12
Publication date: 1952-04-08
Anticipated expiration: 1969-04-08

Description

A ME fi, M52 W. B. BOICE FENCE FOR JOINTERS 2 SHEETS-SHEET 1 Filed Jan. 12, 1951 INVENTOI}. MAW/0m 5. 50/66 April 8 1952 w. B. BOICE FENCE FOR JOINTERS 2 SHEETS-SHEET 2 Filed Jan. 12, 1951 INVENTOR. W/Y/[ZiM .5. 50/68 BY 1 -lilllllillF llllLF {l1 E A TTDRNEY Patented Apr. 8, 1952 FENCE FOR JOINTERS William B. Boice, Toledo, Ohio, assignor to Boice- Crane Company, Toledo, Ohio, a corporation of Ohio Application January 12, 1951, Serial No. 205,812

2 Claims.

This invention relates to fences or gage bars useful for work guiding purposes in connection with machine tools, such as jointers, shapers. saws and the like.

An object is to produce a fence of the above character, which is light in weight, sturdy and rigid in construction, inexpensive to manufacture, readily and conveniently tilted and adjusted transversely of the work table, and easily mounted in position of use.

Other objects and advantages will hereinafter appear, and for purposes of illustration but not of limitation, an embodiment of the invention is shown in the accompanying drawings, in which- Figure 1 is a front perspective view of a dointer;

Figure 2 is an enlarged fragmentary vertical sectional view on the line 2-2 of Figure 1;

Figure 3 is a sectional view on the line 3-3 of Figure 2;

Figure 4 is an enlarged fragmentary end elevation showing the end mounting of the jointer fence;

Figure 5 is a sectional view on the line 5-5 of Figure 4;

Figure 6 is an enlarged top plan view of the fence with the rearwardly extending connecting arm removed;

Figure 7 is a front elevation of the fence on an enlarged scale;

Figure 8 is a transverse sectional View substantially on the line 8-8 of Figure '7; and

Figure 9 is a transverse sectional view on the line 9-9 of Figure 7.

The illustrated embodiment of the invention comprises a woodworking machine, specifically a jointer having a cabinet base ill on which the jointer J is suitably mounted. The jointer, as shown, has a bed ll upon which is mounted a vertically adjustable bed 12, adjustment being made through suitable mechanism (not shown) in response to turning movement of a hand wheel is. The rotary cutter (not shown) of any suitable character is normally covered and protected by a pivoted guard I4, which can be swung to inoperative position when not in use. On the bed II is the usual work table [5 and on the adjustable bed 12 is a work table it, the same having a longitudinal extension H which lies alongside a portion of the table I5.

In order to guide the work pieces on the work tables, a fence A is mounted thereon for bodily shifting or to and fro movement transversely of the table as well as for tilting movement. In accordance with the invention, the fence A. is of hollow sheet metal construction, and, as shown, it consists of an elongate body fabricated from sheet metal plates providing a face plate l8 and a back plate I! with which a top plate 19 is integral. The face plate l8 of the fence is adapted to engage the work piece, and is slightly longer than the rear plate ll, which is welded to the rear face of the plate [8 slightly above its lower pointed edge and lies in a plane of approximately 45 to the face plate IS. The top plate l9is slightly curved outwardly and its free longitudinal edge abuts the rear side of the face plate IE to which it is welded. The outer end portion B of the fence is of less height than the main body to allow for vertical adjustment of the table" l6, as willbe apparent. In this instance, there are three equi-distantly spaced reenforcing "spacers 20 in the form of triangular plates, which are secured in place and serve to brace and reenforce the assembly.

In forming the fence, the spacers 20 are first welded along their abutting edges to the rear plate I! and top. plate l9. Thereafter, the face plate 18 is welded to the lower edge of the back plate I1. .As shown in Figure 7, in the region of each spacer 20 is an arcuate opening 2| formed in the lower portion of the face plate l8 and at the time that the face plate I8 is welded'to the back plate l1, the openings 2i are filled in the welding operation to form a welded connection with the adjacent edge portion of the respective spacer 20 as well as with the back plate ll. Subsequently, of course, this fill-in is ground and polished so that the face of the fence is smooth. In the top plate in the region of the spacers 20 and at the front edge portion are small rectangular notches 22, which are filled at the time of Welding, thereby rigidly to secure the upper portions of the spacers in position and also to secure the front plate [8 to the top plate [9. Similarly these portions are subsequently ground and polished to provide a uniformly smooth exterior.

During the welding of the parts together, a metal plate 23 is welded in the right hand end portion (Figures 6 and 7) of the fence, this plate being tapped to receive screws 24 for securing a sector member 25 to the fence. The sector depends from the fence, as shown, and is formed with an arcuate guide slot 26 into which projects a pair of studs 21, which are fixed to and project outwardly from a slide 28. The slide 28 is slidable longitudinally in a flanged track formed on a guide plate 29, which in this instance forms a part of the jointer bed l2, the guide plate 29 having a longitudinally elongate slot 30.

Extending through the arcuate slot 25, the slide 28 and the longitudinally elongate slot 30 is a rod 3| which has a bent handle 32 at the outer end, the opposite end being screw-threaded to receive a shouldered nut 33. A collar 34 fixed on the outer portion of the rod 3| bears against an externally screw-threaded sleeve 35, on which is screwed a nut 36 which has a knurled outer portion. The inner end of the nut 38 is adapted to bear against the outer face of the sector '25. Loosening of the rod 3! enables shifting movement of the slide, whereas loosening of the nut 35 enables independent tilting of the fence.

Provision is made for guiding the movement of the intermediate portion of the fence and retaining it against vertical movement away from the table. For this purpose, a bracket 38 is secured to the top plate 19 of the fence by screws 39, which enter tapped holes in the top plate. Integral with the bracket is an apertured boss 40 to which is pivotally connected the inner end of an arm 41 provided with a longitudinally elongate slot 42. Fixed to the rear end of the machine is a bracket 43, which has an upstanding arm 44 spaced rearwardly from the machine and is formed at its upper end portion with a vertically elongate slot 45. Through the

slots

42 and 45 extends an adjusting fastener 46 in the form of a shouldered bolt, the outer end of which is screw-threaded and receives a nut 41, a handle 48 at the opposite end enabling the bolt to be securely tightened or loosened to enable the fence to be moved across the table or tilted as above described.

To facilitate the adjustment of the fence, a handle in the form of an upstanding post 49 is rigid with the bracket 38 and projects upwardly above the top of the fence. It will be manifest that by loosening the fastener 46 and one or the other of the fastener members at the end of the fence, the jointer can be readily and conveniently tilted or moved to the desired position laterally of the table by grasping the handle 49. Thereafter the respective fasteners are tightened for rigidly retaining the fence in the desired position of adjustment.

From the above description, it will be apparent that I have produced an exceedingly satisfactory and efficient fence for jointers or the like. An important characteristic resides in its sturdy and rigid construction and yet quite light in weight so as to be easily maneuverable. This can be achieved even though the fence is of unusually great length. The hollow welded structure is important also from the standpoint of reducing the cost of manufacture, machining and assembly. Adjusting the position of the fence is made easy by the post type handle, which can be conveniently grasped at a desirable position intermediate its length, and due to the end and intermediate guide and securing devices, adjustment can be quickly and accurately made so that in the translatory movement of the fence, it at all times maintains the desired relation with the machine table.

It is to be understood that numerous changes in details of construction, arrangement and operation may be effected without departing from the spirit of the invention especially as defined in the appended claims.

What I claim is:

1. The combination of a machine table, a hollow fence triangular in cross section with an apical portion thereof engageable with and movable over the table, and adjustable means for holding said fence in bodily shifted and tilted positions relative to said table, said means including a bracket arm connected to the table and extending rearwardly thereof and terminating in an upstanding vertically slotted arm, a longitudinally slotted arm pivoted to the upper portion of the fence and extending rearwardly to said vertically slotted arm, and an adjustable clamp extending through both the slots of said arms for holding the same in adjusted position.

2. The combination claimed in claim 1, said clamp including a clamp screw having a shank extending through said slots, a nut threaded on one end of said shank and engaging one of said arms at the sides of the slot therein, a shoulder on the other end of said shank engaging the sides of the slot of the other of said arms, and a handle affixed adjacent said shoulder, there being another handle affixed to said fence and extending upwardly therefrom in the region adjacent the pivotal mounting of the slotted arm which extends rearwardly from said fence, whereby said handles may be simultaneously grasped for adjusting the fence.

WILLIAM B. BOICE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 434,284 Loveland Aug. 12, 1890 1,032,278 England July 9, 1912 1,790,288 Tautz Jan. 27, 1931 1,975,562 Tautz Oct. 2, 1934 2,140,322 Lonskey Dec. 13, 1938