US1727988A - Grooving tool - Google Patents

Description

Sept. l0, 1929.- F w,` KAMMERER 1,727,988

GROOVING TOOL Filed April 2'7. 1927 Z5 Sheets-Sheet 1 ZQ. i5

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Sept. 10, 1929, F. w. KAMMERER GROOVING TOOL Filed April 27, 1927 3 Sheets-Sheet 2 Sept. l0, 1929. F.w. KAMMERER GROOVING TOOL Filed April 27, 1927 5 Sheets-Sheet 3 atbozneq Y.

Patented Sept. 10, 1929.

umrEin STATES FRED W. KAMMERER,

OF NEW YORK, N. Y.

GROOVING TOOL.

Application filed April 27,

This invention relates to improvements in wood-working tools especially adapted for making grooves in window-sashes or the like, for the subsequent insertion of weather strips.

The invention comprehends the production of a tool of the above mentioned character comprising an adjustable chisel associated with guiding means therefor, said guiding means further functioning as a saw, as will presently appear.

Another object of the invention is to provide adjustable guiding means for said chisel, said means being adapted to slide along the side of a window sash or the like, for guiding said chisel vin order that the cut or groove made thereby will be maintained in spaced parallelism with the side of said sash frame.

A further object is to provide said guiding means with a saw arrangement for cutting into the cross-piece of the window frame or the like, in unison with the grooving operation of said chisel through said cross-piece.

A still further object of the invention resides in t-he provision of means for doublegrooving a sash or the like, embodying an auxiliary guide having a saw arrangement and adapted to adjustably support a chisel operating in conjunction therewith.

With these objects in view, together with others which will appear as the description proceeds, the invention resides inthe novel formation, combination, and arrangement of parts, all aswill be described more fully hereinafter, illustrated in the drawings, and particularly pointed out in the claims.

In said drawings:

Figure 1 is a side elevation of the tool.

Fig. 2 is an elevation like unto Fig. l, but showing the opposite side thereof.

Fig. 3 is a front elevation of the device.

Fig. 4t is an elevation of the upper and lower sashes of a window to illustrate the work performed by the tool.

Fig. 5 is an elevation of the top of the lower r sash, the dotted linesindicating the cuts to be made by the tool.

Fig. 6 is a front elevation of the tool embodying a slightly modified form of guiding means.

Fig. 7 is a detail View of Said guiding means 1927. semi No. 186,921.

tool yand viewed from the is shown the upper sash and lower sash 6 of a window-frame, each comprising side members 7 and S respectively, joined by crossrails 9 and 10. By the use of my improved and novel tool I propose to cut grooves 11 and l2 in the side members 7 and 8 and continue the same through the ends of the cross-rails 9 and l0, as clearly shown in e. However, upon inspection of Fig. A it will be observed that the sashes are provided with crossrails having their inner faces oppositely beveled which abut when both sashes are closed, and while some crossrails may not present beveled meeting faces, yet all yhave some sort of projection which separates the sashes sufficiently to permit a cut for the insertion of the usual parting strip.

The devices developed by my predecessors in this art comprise ay chisel for cutting the n groove there being guiding means in the .form

of a plate or the like for the purpose ofysliding along the face of the side members to direct the line of the chisel. However, ithas been impossible to cut through the end of the crossfrail in viewof the projections extend` ing inwardly therefrom and it has been necessary to remove the guide or fence in order to work on the cross4rail and linish the groove. As will appear hereinafter my improved tool overcomes this defect and thusr permits the cutting of a continuous groove through the side, members and each of the cross-rails disposed at the top and bottomrof the sash, withthereof, which is provided with an upwardly directed extension 14, at the forward end thereof which serves as a support for the hand grip 15. For convenience and ease of operation I prefer to provide said extension 14 with a side projection 16, (see Fig. 3), the top portion thereof being arranged to receive said grip'and dispose the saine in an angular position. As shown in Figs. 1 and 2 the grip is mounted on the top ofthe extension 14 and by removing the screw 17, the same may be positioned on the projection 16, as indicated in Fig. 3. 'Ihe rear of the device is further provided with an operating handle 18, preferably forming an integral part of the body portion 13.

Depending from said body portion is a skirt portion 19, being of relatively thin material and having an opening 2O presenting an oblique cut 21 to serve as a brace forthe chisel 22 adjustably mounted in said body portion. It is of course obiuous that the rotation of the shaft 23 carrying the serrated wheel 24 causes the latter to cooperate with the serrations 25 of the chisel 22 to affect the advance or retardation of the latter.

The guiding means hereinbefore referred to comprises a plate 26 slidably mounted on pins 27 and 28, (see Figs. 2 and 3), extending laterally fromjsaid body portion, the inner ends thereof being secured by nuts 29 and` 39 as shown in Fig. 1. By this construction said plate 26 is maintained in spaced parallel relation to said skirt 19 and as shown in the drawings is disposed below the bottom edge thereof. rIhe space between saidsliirt and platemay be varied by loosening the setscrews 31 and 32 threadedly engaged in bosses 33 and 34 of said plate. However, in view of thestandard sizes of window-sashes and the like, it is possible to have a lined location for said plate and to this end collars 35 and 36 encircle the vpins 27 and 28 between said shirt and plate and for ordinary' purposes this spacedrelation meets the general requirements. Nevertheless, adjustabilityof the plate 26 lis provided for.

Said plate 26 is further provided with saw teeth 37 extending preferably a distance from the forward end greater than one-half the longitudinal dimension thereof, the bottom portion of said plater being 'beveled on the outer side, as indicated at 38 in Fig; 3.

The depth of the groove to be cut by the tool is determined by setting the gauge 39, the slotted upper portion 4() thereof being engaged by the screw 41, and obviously by this arrangement the depth of thegroove is determined by the distance between the end of the chisel 22 and the bottom surface of the foot portion 42 of said gauge.

In the operation of the tool the inner face Vof the guiding means ory plate 26 abuts the inner face A of the side memberof the window sash and in view of its extension below the shirt 19 and the cutting edge of the chisel 22, the latter is guided in a position to start the cutting operation, and upon the advance of the tool the saw teeth meets the cross-rail and begins the sawing operation in line with the inner face A of the side member. The tool is now reciprocated in the usual manner until the foot portion 42 indicates that the proper depth has been reached. In Fig. 5 the dotted lilies B indicate the start of the groove, while the dotted line C indicates the saw-cut `in the projection. From the foregoing it is apparent that the saw arrangement is used as a guide for the chisel until the cross-rail is reached and then the saw goes into operation and obviously cuts into said cross-rail and continues the guiding operation.

While the tool has been shown as used in connection with window sashes, it will, of course, be understood that it is equally adapted for cutting grooves into doors or similar structures wherein weather strips are tobe incorporated. n The modified form of guiding means, depicted in Figs. 6 to 8 inclusive, comprises a plate 43 somewhat similar to plate 26, and is provided vwith apertured bosses 33 for sli-dably mounting said plate 43 on the pins 27 and 28. f

However, my main purpose in providing this auxiliary guiding means or plate 43 is to increase the utility of the tool, and as will presentlyappear all the features of the form just described are retained and further supplemented by means for making another or extra groove in the sash.

To this end another cutting element, or chisel 44, is mounted in said plate 43, the latter being obliquely groove-d as indicated at 45, (see Fig. 7), for the reception of said chisel, and through the cooperation of the slot 46 therein and the screw arrangement 47, the positioning of said chisel and the depth of the cut to be made thereby may be adjusted at will.

The operation of the tool in this modified form is quite similar to the other form in that the inner face of the plate 43 abuts the inner face A of the si-de member of the window sash shown in Fig. 9 while the chisel 22 is starting the cut B in the sash. At the same time, however, the other chisel 44 starts cutting on the dotted line D and as the tool is advanced the saw arrangement 48 meets the ycross-rail 10y and cuts the same on the dot and dash line C. This operation is continued until the foot portion 42 encounters the top of the sash and thus a double groove yis formed in the sash as indicated in Fig. 10.

From the foregoing it is apparent that the utility of the tool is markedly increased by this auxiliary guiding means or plate 43. In view of the adjustability of the chisel 44 and also the chisel 22, the depths of the grooves with respect to each other may be varied as desired and further the space therebetween is equally susceptible of variation, through the intermediary of the pins 27 and 28.

In view of the double groove arrangement it is possible to use a weather strip of large proportions and of greater utility.

vWhile the present is a disclosure of the preferred forms of the invention, it is to be understood that the invention is not limited thereto, as various changes in the minor details of construction, proportion and arrangement of parts may be resorted to without departing from the spirit of the invention as defined in the appended claims.

I claim:

l. In a device of the character described,

, the combination with a cutting element and guiding means therefor, said guiding means being spaced from said cutting element and having saw teeth disposed below the same and adapted to guide said cutting element during the operation of the saw.

2. In a device of the character described, an adjustable cutting element, a guide spaced from said cutting element having its bottom edge below said cutting element and saw teeth arranged in said guide and adapted to guide said cutting element during the sawing operation.

3. In a device of the character described, a cutting element, an adjustable guide for said cutting element terminating below said cutting element and in spaced relation therewith and sawing means arranged in said guide, extending beyond the cutting point of said element and adapted to guide said cutting element during the sawing operation.

t. In a device of the character described, the combination of a pair of cutting elements and a sawing element disposed in a plane lower than said cutting elements, spaced therefrom, and adapted to serve as a guide therefor. f

5. In a device of the character described, a pair of adjustable cutting elements, a guide for said cutting elements having its bottom edge below the same and saw teeth arranged in said guide and adapted to guide said cutting elements during the sawing operation along an area remote from the cutting point.

6. In a device of the character described having a pair of adjustable cutting elements, guiding means for said cutting elements, said guiding means carrying one of said cutting elements and having its bottom edge positioned below said cutting elements and adapted to guide the same during the cutting operation.

7. In a tool of the class described having a cutting element, the combination of a guiding means for said element, sai-d means comprising a plate terminating below said cutting element and in spaced relation therewith and a second cutting element adjustably mounted on said plate, the cutting operation olli' loth of said elements being guided by said p a e.

8. In a tool of the class described having an adjustable cutting element, the combination of ust-able guiding means, said means c0mprising a plate terminating below both of said cutting elements and a second cutting element adjustably mounted on said plate, the cutting operation of both of said elements being guided by said plate.

9. In a device of the character described, an adjustable cutting element, adjustable guiding means for said cutting element, said guiding means terminating below said cutting element, an-d spaced therefrom, and arranged to serve as a saw during the operation of said cutting element.

1Q. In a device of the character described having a pair of cutting elements, the combination of guiding means for said cutting elements, said guiding means adjustably supporting one of said cutting elements and terminating below both of said elements and spaced from one thereof and arranged to serve as a saw during the operation of said cutting elements.

FRED W. KAMMERER.

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