Dowel pin insertion device with height indicator

#1. Field of Invention

#This invention relates generally to a device for guiding and inserting dowel pins while also indicating their height.

#2. Description of the Prior Art

#FIG. 1 is a section view taken at 1--1 on FIG. 2, showing the vertical slot, indicator/stop, and the push rod in relation to the dowel pin.

#FIG. 2 is a combination plan view and an elevation view of the DOWEL PIN INSERTION DEVICE WITH HEIGHT INDICATOR, sitting as it would function on a section of tooling plate.

#FIG. 3. is a section view taken at 3--3 on FIG. 2, with a dowel pin partially inserted to a set position in the tooling plate and a linear scale of lines formed around the push rod.

#Referring to FIGS. 1,2,3, & 4, an embodiment of the DOWEL PIN INSERTION DEVICE WITH HEIGHT INDICATOR is shown. In this embodiment, the DOWEL PIN INSERTION DEVICE WITH HEIGHT INDICATOR is comprised of: a body 1, which may be comprised of a hardened steel member with an axial channel 3 along the body's 1 long axis and a radial opening through one side forming a slot 4; a push rod 2 which may be comprised of a hardened steel member, with an opening radially through the side; a steel indicator/stop 5 , and a linear scale 6. Force F is defined as any external force required to push the dowel pin 8 into the plate 7 into which it is to be inserted.

#In this embodiment, a means of transferring force F to the dowel 8 is the push rod 2. Referring to FIG. 1, the push rod 2 is slipped into the axial channel 3 of the body 1 and captivated by the indicator pin/stop 5 pressed through the slot 4 into the push rod 2. The indicator/stop 5 slides up and down the slot 4 as the push rod 2 moves up and down the axial channel 3, limiting the push rod 2 to a set linear distance of travel determined by the length of the slot 4.

#Referring to FIG. 2, a linear scale 6 comprised of lines spaced at a set linear distance is formed into the body 1 around the slot 4 as the push rod 2 slides up and down, the indicator/stop 5 moves through the slot 4 along the scale 6 indicating the linear distance to which the push rod 2 has traveled. Referring to FIG. 3, the dowel pin 8 is inserted into the axial channel 3 in the body 1 opposite the push rod 2. The body I is then aligned with the opening, in the plate 7 into which the dowel pin 8 is to be inserted. The surface of the body 1, that contacts the plate 7 that the dowel pin 8 is to be inserted, is perpendicular to the body's 1 centerline. The body 1 acts as guide to hold the dowel pin 8 straight and perpendicular to the plate 7 into which it is being inserted. Force F is then applied to the push rod 2 to insert the dowel pin 8 into the plate 7.