US2987087A - Guide for mortising hinges - Google Patents

Description

June 6, 1961 Filed Dec. 16, 1958 A. C. NORMAN ET AL GUIDE FOR MORTISING HINGES 2 Sheets-Sheet 1 J il AN ALVIN fir k MARVIN B. STROTHER BY F1 2 0: 4- G ATTORNEYS June 6, 1961 A. c. NORMAN ET AL 2,987,087

GUIDE FOR MORTISING HINGES Filed Dec. 16, 1958 2 Sheets-Sheet 2 ALVIN NORMAN MARVIN 5 STROTHER BY ATTORNEYS ed States Pa GUIDE FOR MORTISING HINGES Alvin C. Norman, 1850 SE. 42nd St, and Marvin B. -Strother, 7325 N. Atlantic Ave., both of Portland, '0reg.,' assignorsof one-third 'to Ralph L. Harris, PortlandOreg.

Filed Dec. 16, 1958, Ser. No. 780,823 2Claims. (Cl. 144-27) The present invention relates to tools for marking and mortising hinges on doors, particularly cabinet doors.

The primary object of the invention is to provide a guide used in the mortising of a door for receiving hinges. In the mortising of the door, this new and improved device guides a power driven router while cutting a recess in the edge of the door for receiving a hinge.

Another object of the invention is to provide a tool for marking and guiding the position of the hinges relative to the casing surrounding the door. This marking device locates accurately pilot holes for receiving the screw nails for holding the hinge to the casing in the proper position when hanging the door.

Other objects and advantages will become apparent in the following specification when considered in light of the attached drawings, in which:

FIGURE 1 is a fragmentary outside elevation of a hinge for supporting a door within a casing;

FIGURE 2 is an inside perspective view looking outwardly with the door partially opened, showing the position of the hinge therein;

FIGURE 3 is a plan view of the invention mounted on the upper edge of the door, illustrating the routing machine by broken lines;

FIGURE 4 is a longitudinal sectional view, taken on line 4-4 of FIGURE 3, looking in the direction indicated;

FIGURE 5 is an end view of the invention illustrating the routing machine in broken lines with the door shown in section;

FIGURE 6 is a view similar to FIGURE 1 which illustrates the hinge and the door brought against the casing to permit marking the hinge position thereon;

FIGURE 7 is a plan view of the marking tool;

FIGURE 8 is a front view of the structure shown in FIGURE 7;

FIGURE 9 is an end view of the structure shown in FIGURE 7;

FIGURE 10 is a perspective view of the marking tool applied to the casing and showing in broken lines the tool with which the pilot holes are being drilled; and

FIGURE 11 is a fragmentary sectional view of the casing with the marker in position for drilling the pilot holes.

Referring now to the drawings in detail wherein like reference characters indicate like parts throughout the several figures, the reference character G indicates generally a mortising guide which includes a table 15, having an integral downwardly extending guide 16. A movable guide 17 is adjustably secured to the table by the bolts 18. Slots 19 are provided within the base 20 of the guide 17 and wing nuts 21 cooperate with the bolts 18 to clamp the movable guide 17 to the table in the desired adjustment to snugly engage the edge 22 of the door 23 with the guide 16 engaging the opposite side of the door 23.

Fixedly mounted to the upper surface of the table 15 is a rectangular internal guide 24. The guide 24 includes a member 25 fixedly secured to the table 15 by screws 26 and a U-shaped member 27, adjustably and fixedly secured to the table 15 by screws 28 engaged through slots 29 formed in the member 27. The purpose Patented June 6,1961

2. of the adjustment of the member 27 is to provide. for various lengths of hinges to be applied to the door.

The position of the device on the door is governed'by a stop pin 30, which engages the outer end 31 of the door 23, as best illustrated in FIGURE 4. The pin 30 is selectively positioned in one of the holes 32 providing for positioning the hinge various distances from the end of the door.

In the operation of the mortising guide G, the position of the stop pin 30 is first selected and the member 27 is then adjusted through the screws 28 for determining the length of the mortise to be cut on the edge of the door, corresponding to the length of hinge to be applied thereto. The position of the guide 17 is determined and adjusted depending upon the thickness of the door for maintaining the guide G firmly thereto.

Referring to FIGURES 3 and 4, a power operated router 33 has a base 34 which rests on the table 15 and is guided with respect to the edges of the door by the guides 24, thereby governing the travel of the router bit 35 while forming the recess 36 in the edge of the door. The recess 36 is of a size to receive the portion 37 of the hinge 38, as best illustrated in FIGURE 2. The depth of the mortise 36 is determined by adjusting the bit 35 longitudinally of the mortising or routing machine 33 to cut the proper depth. When using this device the mortising of the casing is eliminated by having the recess 36 sufiiciently deep to provide space for the oppositely disposed portion 39 of the hinge 38 when the door is closed, still leaving a slight clearance 40 between the casing and the door.

After the hinge is applied to the door 23 by the usual screws, the door 23 is put in place, as illustrated in FIG- URE 6, and the casing is marked at 41. A tool 42 including a drill guide 43, having a right angle integral extension 44 and an outwardly projecting handle 45 forming part thereof is positioned to fit over the inner edge 46 of the casing 47, registering with the marks 41.

Forming part of the tool 42 is a detent 48 which is driven into the edge of the casing 47 when the tool 42 is in the proper position for holding the tool 42 in a fixed position relative to the marks 41. The detent 48 is so designed that when driven it tends to pull the guide 44 of the tool 42 towards the casing, as indicated particularly in FIGURE 9, wherein the edge 49 is perpendicular to the guide 43, while the edge 50 hasconsiderable slope thereto.

Holes 51 are positioned in the drill guide 43 of the tool 42. The holes 51 guide a small drill when passed therethrough to make pilot holes within the edge of the casing 47 for starting the screws 52 into the casing 47, best illustrated in FIGURE 10. The holes 51 prevent the drill from shifting to one side or the other as is the tendency when drilling through layers of veneer, as in plywood. The tool 42 comes in various dimensions in order to fit different sizes of casings 47 and difierent dimensions of hinges.

Having thus described the preferred embodiment of the invention, it should be understood that numerous structural modifications and adaptations may be resorted to without departing from the scope of the appended claims.

What is claimed is:

1. A mortising guide for door hinges comprising an elongate flat generally rectangular plate, a guide integrally formed on said plate and depending perpendicularly therefrom, a second guide arranged in parallel relation to said first guide, means securing said second guide to said base plate with said means permitting said second guide to be adjusted with respect to said first guide, said plate having a central aperture formed therein to permit a routing bit to extend therethrough from a router in upstanding relation on said plate surrounding said central aperture and spaced outwardly from the edges thereof to provide a shoulder portion for supporting and guiding said router when moved 'on said plate. v

2. device as claimed in claim 1 wherein said last named means includes a U-shaped member straddling said central aperture and adjustably secured to said plate to vary the movement of said router thereon.

' Refereuces Cited in the file of this patent UNITED STATES PATENTS Pullen Feb. 9, 1909 Willson Nov. 3, 1914 Carter .t....-s Jan. 27, 1925 Zern- Sept.- 9, 1947 Tubbs Mar; 3, 1953 lGjersoe Feb". 7,v 1956

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