US2737986A - Safety guide for a vertical jointer - Google Patents

Description

March 13, 1956 E. A. GILLES 2,737,936

SAFETY GUIDE FOR A VERTICAL JOINTER Filed June 26, 1955 2 sheets-sheet 1 Fig.

Edward A. Gil/es IN V EN TOR.

BY WWW mm March 13, 1956 E. A, GILLES 2,737,986

SAFETY GUIDE FOR A VERTICAL JOINTER Filed June 26, 1953 2 Sheets-Sheet 2 Fig. 3

Edward A. Gil/es JNVENTOR.

Fig. 4

United St te Patent() SAFETY GUIDE FOR A VERTICAL JOINTER Edward A. Gilles, Hampton, Va. Application June 26, 1953, Serial No. 364,327

2 Claims. (Cl. 144-253) This invention relates to the class of power tools and more particularly to a device adapted to be attached to a vertical jointer in order to provide additional safety to the operator thereof while resiliently and securely holding the workpiece against the cutting element of the vertical jointer.

The primary object of this invention resides in the provision of a device which may be readily attached to existing power tools such as vertical jointers which will securely hold the workpiece against the cutting member in such manner as to insure eflicient operation of the machine while protecting the limbs of the operator.

The construction of this invention features the use of a stock guide that is resiliently held by leaf-like resilient members so asto continuously urge the workpiece against the cutting element of the vertical jointer.

An additional feature of the invention resides in the provision of a supporting arm having an elongated longitudinal slit therein within which a standard is adjustably secured, the standard carrying the resilient members which carry the stock guide.

Still further objects and features of this invention reside in the provision of a safety attachment for vertical jointers that is strong and durable, simple in construction and manufacture, constructed of a minimum number of parts, which is adjustable for use with various sizes and types of these power tools, and which may be produced at a relatively low cost for wide distribution.

These, together with the various ancillary objects and features. of the invention which will become apparent as the following description proceeds, are obtained by this attachment for a power tool, a preferred embodiment of which has been illustrated in the accompanying drawings by way of example only, wherein:

Figure 1 is a top plan view showing the device as installed on a vertical jointer;

Figure 2 is a side elevational view illustrating the mannor in which the supporting arm is secured to the jointer with the stock guide holding the workpiece against the cutting element;

Figure 3 is a perspective view of the safety device;

Figure 4 is a vertical sectional view as taken along the plane of line 44 of Figure 3;

Figure 5 is a horizontal sectional view as taken along the plane of line 55 of Figure 3 showing the manner in which the spring-like end portions of the resilient members are appended to the stock guide; and

Figure 6 is a sectional detail view illustrating the connection between the support arm and the vertical jointer.

With continuing reference to the accompanying drawings wherein like reference numerals designate similar parts throughout the various views, reference numeral 10 generally designates a vertical jointer or the like. The vertical jointer 10 includes a head 12 carrying a shaft on which a cutting element 14 is mounted.

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The safety attachment for the vertical jointer 10 comprising the present invention is generally indicated by reference numeral 16 and includes a substantially horizontal connecting arm 18 having an end portion 20 which extends vertically upwardly and which terminates in a recessed plate 22 through which a screw 24 or other fastener extends, the screw 24 being threadedly engaged within threaded aperture 26 in the head 12 of the vertical jointer 10. The other end of the connecting arm 18 is bifurcated by a slit extending therethrough, the slit forming a pair of parallel sections 28 and 30. Received between the parallel sections 28 and 30 is a threaded shaft 32 forming a portion of a vertical standard 34. A nut 36 and washer 38 are used to lockingly adjustably secure the vertical standard 34 in position relative to the connecting arm 18 and perpendicular to the table 35.

Suitably secured as by a bolt 40 extending through the standard 34 are resilient members 42 and 44.

The resilient members 42 and 44 have their other end portions convering outwardly to form leaf- like spring ends 46 and 48. The ends 46 and 48 are provided with slots 50 and 52 therein. Screws 54 and 56 are adapted to extend through the slots 50 and 52 and are engaged in a stock guide 58. It is to be noted that the outwardly diverging ends 46 and 48 form convex surfaces relatively to the stock guide 58 and that in response to the amount of pressure applied upon the stock guide 58 against the resistance of the resilient members 42 and 44 the resilient members 42 and 44 will have their ends 46 and 48 converge more or less outwardly. This in turn turns the point of tangency between the ends 46 and 48 and the stock guide 58 and hence the point of the slots 50 and 52 through which the fasteners 54 and 56 extend. Furthermore, upon adjustment of the standard 34 relative to the supporting arm 18 the distance between the stock guide 58 and the cutting element 14 can be adjusted which in turn predetermines the amount of tension that will be applied upon the workpiece 60 when such is inserted between the stock guide 58 and the cutting element 14. It is to be especially noted that the stock guide 58 has its innermostend portions rounded off to form cam surfaces 62 and 64 which are adapted to more readily and easily permit the insertion of the workpiece.

Since from the foregoing the construction and ad vantages of this safety attachment for power tools are readily apparent, further description is believed to be unnecessary. However, since numerous modifications will readily occur to those skilled in the art after a consideration of the foregoing specification and accompanying drawings, it is not intended to limit the invention to the precise embodiment shown and described, but all suitable modifications and equivalents may be readily resorted to which fall within the scope of the appended claims.

What is claimed as new is as follows:

1. A safety guide for a vertical jointer comprising a connecting arm adapted to be secured to a vertical jointer, said connecting arm having an elongated slit therethrough bifurcating one end thereof, a standard adjustably engaged within said slit and depending from said connecting arm, a pair of resilient members secured to said standard, a stock guide carried by said resilient members, said resilient members having outwardly diverging spring-like leaf end portions, slots in said end portions, and fasteners seated in said slots, said fasteners being secured to said stock guide.

2. A safety guide for a vertical jointer comprising a connecting arm adapted to be secured to a vertical jointer, said connecting arm having an elongated slit therethrough bifurcating one end thereof, a standard adjustably engaged within said slit and depending from said con- References Cited in the file of this patent UNITED STATES PATENTS Thom Sept. 6, 1892 Stoddard May 31, 1898 FOREIGN PATENTS Germany Mar. 16, 1923 France Mar. 17, 1928 Switzerland May 16, 1936 Germany Oct. 29, 1943

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