US1495579A - Combination jack and jointer plane - Google Patents

Description

J. H. DEVINE May 27 1924.

COMBINATION JACK AND JOINTER PLANE Filed June 1, 1923 g vum xtoz Jab/2 f! Qewiae.

Patented May 27, 1924.

warren JOHN H. DEVINE, OF DENVER, COLORADO.

COMBINATION JACK Ann JOINTER PLANE.

Application filed June 1,

cvact description of the invention, suchas will enable others skilled in the art to which it appertains to make and use the same, refs-Q erence being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in carpenters planes, and has special reference to an attachment by means of which the stock can be increased and whereby an ordinary jack-plane can be readily converted into and used for a jointer.

In order to be in position to do the various jobs that are necessary in building and other carpenter work, it is essential that a carpenter shall have the proper tools. Among other things, he must have a jack-plane and a jointer-plane. The main distinction be tween these two types of planes is one of length, a jack-plane being anywhere from 12 to 17 inches in length while a jointerplane is f om 28 to 30 inches long. The jack-planes. as manufactured and. sold today, are all of substantially the same length and width, being approximately 14 inches long and 2% inches wide, while the jointerplanes are substantially 24 inches long and 2% inches in width and weight approximately eight pounds.

As the only real distinction between a jack-plane and a jointer is one of length only, it is apparent that, by providing a suitable attachment that can be readily secured to and removed from the jack-plane and by means of which the effective length of the stock can be increased, the jack-plane can he used as a jointer.

It is the object of this invention to produce an attachment which shall be light and rigid, and which shall be provided with means by which it can be secured to a jackplane of ordinary construction for increasing the effective length thereof. By means of my attachment, the jack-plane can be made to do the work of a jointer-plane and therefore it will be unnecessary for the carpenter to go to the expense of buying more 1923. Serial No. 642.741. i

than one plane. As a jointer-plane weighs about eight pounds, while the attachment is comparat vely light, it is evident that less weight Wlll have to be carried about.

In order to more clearly show and describe w my invention, I shall have reference to the accompanying drawing in which thefpreferred form thereof is shown and in' which: Fig. 11s a perspective viewof a jack plane, to which my attachment has been ap plied;

Fig. 2 is a section taken on line 2-2, Fig. 1; i

Fig. 3 is a. top plan view of my attachment looking in the direction of arrow 3, in

Fig. 4.

Fig. 4 is'a side view ofmy attachment; and I Fig. 5 is a bottom plan view. looking in the direction of the arrow 5 in Fig. 4.

The same reference characters will be used to designate the same parts through the several views.

Numeral 1 represents the stock of a jackplane which is provided withthe ordinary iron 2, breaker iron 3. wedge 4, and toat 5 My removable extension member 5 is made of cast metal or of pressed steel and has a flat bottom or sole 6 whose length is ap priximately 24 inches and whose outside width is about 2 inches. The sole 6 is formed in two parts, joined by vertical sides 7 which are upwardly arched in the manner shown in Figs. 1 and 4. The distance between the inner surfaces of sides 7 is equal to the width of the jack-plane and the distance between the inner ends of the sole sections 6 (indicated by numerals 8 and 9) is equal to the length of the sole of the stock of the jack-plane. The metal portions marked 10 and 11 are pressed upwardly in the manner indicated in Fig. 4 to a distance which is equal to or slightly greater than the thickness of the material in the sole of the jack-plane stock. The upwardly pressed portions 10 and 11 are each provided with three spaced holes for the reception of the screws 12, 13 and 14, the purpose of which will hereinafter appear. The ends of the jack-plane are perforated and threaded for the reception of screws 13 which serve to clamp the jack-plane to the attachment in the manner shown in Fig. 2. As it is essential that the sole of the plane and that of the attachment shall be in one plane, the screws 12 and 14 are provided for too no i

the purpose ofmaking the necessary adjust ments." Screws l2 and 14 are threadedly connected to the plane attachment, while screw 13 is threaded to the sole of the plane. Therefore by means of these, three screws at each end, the plane and the attachment may be accurately adjusted so that the surfaces of the soles will coincide. The screws 12 and 14, after they have'been once adjusted to fit a certain plane, will not have to be moved, and therefore the attachment can be securedto the plane by merely operating the screw 13.

It is my intention to form the attachment fromva piece of steel plate about of an inch in thickness, as they can then be presses outby means of a die. They can, however be cast from steel or a good grade of cast iron. The'arched sides 7 give the device the requisite rigidity so that the sole will not become curved when subjected to ordinary strains.

From the foregoing, it willloe apparent thatI have invented an attachment that can having now described my invention, 1 claim is:

1. An article of manufacture comprising a pair of plane soles spaced apart and connected along their outer edges by means oi? parallel ribs or flanges, said soles having their inner ends oi'iset to provide recessed portions adapted toreceive the ends of jack-plane; and adjusting screws threadedly connected to each offset portionv 2. .5111 article of manufacture comprising a pair of plane soles spaced apart and connected along their outer edges by means of parallel ribs or fiai es,said soles having their inner ends offset in an upward direction to provide recess .1 portions adapted to receive the ends of jack plane, a screw rotatably connected to the center of each oii'set portion said screw being; freely rotatable therein and adapteo to be threaded-- ly connected to the jack plane, and an ad justing screw threadedly connected with each offset portion on each side of the firstmentioned screw, said screws being adapted to engage respective sides of the ack plane for purpose of adjustment.

in testimony whereof l afiix my signature.

' JOHN H; nnvinn.

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