Improvements in Stud Setting Machines.
Year: 1898

page_text: Date of Application, 12th Apr., 1898-Accepted, 25th June, 1898
COMPLETE SPECIFICATION.
Improvements in Stud Setting Machines.
I, FRANKLIN ALFRED ERRINGTON, of 23, Townsend Avenue, in the City of New
York, Borough of Richmond, in the State of New York, United States of America,
Mechanical Engineer, do hereby declare the nature of this invention, and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
My invention relates to means for setting a stud in a tapped hole, and the inven-
tion consists in the combination with a body having an axial bore provided with
screw-threads to mesh with the threads of the stud, of a transversely movable wedge
to coact with said stud, whereby when the wedge is in operative position the stud
will be jammed against the same to limit the longitudinal movement of said stud
and to thus hold it firmly in position in said body, and whereby when said wedge
is moved out of the said operative position the stud will be released and free to be
disconnected from said body.
The invention also consists in the novel details of improvement and the com-
binations of parts that will be more fully hereinafter set forth and then pointed out
in the claims.
Reference is to be had to the accompanying drawing forming part hereof,
wherein
Figure 1 is a vertical section of a stud-setting machine embodying my improve-
ments in a simple form;
Figure 2 is a plan view thereof;
ence
a
Figure 3 is a similar view of my improvements when adapted for adjusting the
distance that the stud shall project from the tool-holder of the actuating machine;
Figure 4 is a horizontal section on the plane of the line 4, 4, in Figure 3;
Figure 5 is a view similar to Figure 3 taken at right angles thereto; and
Figure 6 is a horizontal section on the plane of the line 6, 6, in Figure 5.
In the accompanying drawing, in which similar numerals and letters of refer-
indicate corresponding parts in the several views, 1 indicates
body from which extends a shank 2, that is adapted to be gripped in a
suitable tool-holder carried by a drill press or other suitable machine tool
for rotating body 1. The body 1 is provided with an axial bore 3, at its lower end
and with a transverse bore 4 that communicates with the bore 3. To provide a
suitable slip-surface at the inner end of bore 3, I preferably show a transversely
movable wedge 5 that is placed in the transverse bore 4, and prevented from
escaping from said bore by a pin 6, that is located outside of said bore. The
arrangement of the wedge is such that it may have a limited movement
within bore 4 transversely to the body 1. I have shown the inner end of axial
bore 3 as of less transverse diameter than its outer portion, and in the larger
portion of bore 3 is located an internally threaded stud-nut 7, the threads of which
are adapted to mesh with the threads of a stud 8, that is to be set in the tapped
hole of the work C to be operated upon. The stud 8 is adapted to screw through
the stud-nut 7 and to abut against the wedge 5, whereby said stud will be locked

page_text: to the body 1, so that as the latter rotates said stud can be screwed into the
appropriate tapped hole. The upper portion of bore 3 is of sufficient size to
receive the end of the largest sized stud that is capable of use in the device. The
stud-nut 7 is to be held from rotating, so that it will be carried around with the
body or frame 1, and for this purpose, in Figure 1, the lower portion of bore 3
is shown provided with parallel walls, and the stud-nut with parallel sides closely
fitting between said walls, and in Figures 3, 4, 5, and 6 said stud-nut is shown of
greater length than width, with its ends extending beyond the retainer 10, 11,
into slots 9 in the side walls of the frame A. In order to properly and conveniently
centre the stud-nut 7 in the axial line of the body 1, said stud-nut is shown pro-
vided with an annular projection 7" that extends from the lower side of said nut
and is concentric with the screw-threaded bore 7b thereof, and this projection 7"
passes through an opening 10" in a retainer 10 that is located at the lower end of
body 1.
The retainer 10 in Figure 1 is shown in the form of a disk having an
annular wall 11, extending upwardly therefrom and which surround the body 1,
being closely fitted thereto. This retainer 10, 11, may be in the form of a cup in
which the walls 11 are annular, see Figure 2, but if preferred part of the walls 11
on opposite sides could be cut away forming substantially two arms that embrace
the body 1, (see Figures 5 and 6). In fitting the stud-nut in position it is first
either axially inserted in the slotted portion of bore 3 (see Figure 1) passed through
the slots in frame A, from one side of the device, and in both cases then its
projection 7 slips into the bore 10ª of a retainer 10, when said retainer is placed
in position, whereby the threaded bore 7b of said stud-nut is brought and held
in line with the axis of body 1. The retainer 10, 11, is shown held upon the
body 1 (in Figures 1 and 4), by means of the wedge 5 that passes through
apertures 11 in wall 11, that align with the transverse bore 4 in body 1.
It will be understood that the stud-nut centering means 7" may be omitted, but
in running at high speed it is believed to be desirable to embody this feature.
For some purposes it is desirable to adjust the stud 8 longitudinally relatively
to the tool-holder of the drill press or similar actuating machine, and for this pur-
pose I have divided body 1 into two pieces, body 1 and frame A, by which arrange-
ment the stud-nut 7 is made adjustable lengthwise of said frame A. The arrange-
ment for this purpose is shown in Figures 3, 4, 5, and 6. In this case the bore B
in frame A is of considerable size and parallel throughout, reaching well up to the
top of frame A, and it is provided with internal threads B1, (see Figures 3 to 6).
Within the bore B is located the adjusting body 1 that is of sufficient width to pass
through the slots 9 in frame A, and the length of said body is substantially equal
to the transverse diameter of bore B, and at its ends the body 1 is provided with
threads 1ª that are adapted to mesh with the threads B' in frame A. The arrange-
ment is such that the adjustable body 1 may be passed through a slot 9 into bore B
and adjusted up and down a suitable distance while in line with said slots, and
then it may be turned to cause its threads to mesh with the threads B31, whereupon
it will be locked from longitudinal movement in frame A. The retainer 10, 11,
has a transverse slot 11d that opens into the axial bore 3 that registers therewith,
which axial bore leads to the transverse bore 4 in which the wedge 5 is located.
The retaining piece 10 in the shape of a disk or plate is secured to the bottom of
the adjusting body 1, and the projection 7" from stud-nut 7 is adapted to pass into
the same as shown in Figures 3 and 5. It will be understood that the stud-nut 7
is adapted to pass through the transverse bore 4 in adjustable body 1, and also to
project into the slots in Figure 1, whereby the adjustable body 1, is locked to
the frame A, so that as the latter rotates the stud-nut 7 will cause the adjustable
body 1 to rotate therewith. The operation of the stud 8 in conjunction with the
stud-nut 7 and the wedge 5 is similar in all respects with that described with
relation to Figures 1 and 2, the principle difference being that the suitable body,
to which the stud 8 is to be connected by the stud-nut 7 may be adjusted lengthwise
of the frame A. It will be also understood that the stud 8 screws into the stud-
nut 7 and abuts against the wedge 5, and that the wedge 5 may be pushed back

page_text: to release the stud 8 in the same manner as described with relation to Figures
and 2.
From the foregoing it will be understood that when it is desired to set a stud
in a tapped hole in the piece of work, the wedge 5 is driven tightly into its tapped
bore 4, the stud-nut 7 is adjusted so that its bore shall be concentric with the
axis of body 1, and the stud 8 is then screwed into the threads in stud-nut 7 until
said stud abuts against the wedge 5. The device is then rotated (being first con-
nected with a drill press or other machine) and moved so as to present the stud 8
to the tapped hole in the work C, in which it is to be set, and as the device and
stud are fed forwardly the stud will be screwed home and firmly set in the work.
When it has reached its final position the rotation of the device is stopped and the
wedge is pushed back to release its jamming action upon the stud 8 in the threads
of the stud-nut 7, whereupon the device is rotated in the reverse direction to that
first mentioned to unscrew the stud-nut 7 from the stud 8 thus leaving the stud
set in the work.
It will be understood that the tapped bores in different stud-nuts 7 may be of
different sizes to receive various sized studs, and that by merely transferring
the stud-nut 7, studs of different sizes, within appropriate limits, may be attached
to the work by the device.
I do not limit my invention to the precise details of construction shown and
described as they may be varied without departing from the spirit thereof.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
1. The combination with a body having an axial bore provided with screw-
threads to mesh with a stud, of a transversely movable wedge to coact with said
stud, substantially as described.
2. The combination of a body having an axial bore provided with a slip-surface,
an internally screw-threaded stud-nut connected to rotate with said body, and
means to connect said stud-nut longitudinally with said body to resist end move-
ment of said stud-nut, substantially as described.
3. The combination of a body having an axial bore, an internally screw-threaded
stud-nut connected to rotate with said body, a transversely movable wedge, and
means to connect said stud-nut longitudinally with said body to resist end move-
ment of said stud-nut, substantially as described.
4. The combination of a body having an axial bore provided with screw-threads,
said body also having a transverse tapered bore meeting said axial bore, and a
wedge transversely movable in said tapered bore, whereby said wedge can be
jammed tight in said tapered bore, substantially as described.
5. The combination of a body having an axial bore provided with a slip-surface,
a stud-nut having an internally screw-threaded bore and connected to rotate with
said body, means to connect said stud-nut longitudinally with said body to resist
end movement of said stud-nut, and means to register said screw-threaded bore
of said stud-nut with said axial bore of said body, substantially as described.
6. The combination of a body having an axial recess, an internally screw-
threaded stud-nut located in said recess connected to rotate with said Body, a
cover having a bore that opens into said recess and side walls that extend along
said body, a bore that extends through said body and said side walls of said cover,
and a wedge transversely movable in said bore, substantially as described.
7. The combination of a body having an axial bore that meets a transverse bore
and provided with axially located centering means, a transversely movable piece
located in said transverse bore, a frame, said body being longitudinally movable
along said frame, substantially as described.
8. The combination of a body having an axial bore that meets a transverse bore,
a transversely movable piece located in said transverse bore, a frame, said.body

page_text: being longitudinally movable along said frame, and means to lock said frame to
prevent said longitudinal movement, substantially as described.
9. The combination of a screw-threaded frame having a transverse opening, a
body that is screw-threaded to mesh with the threads of said frame and likewise
provided with a transverse opening, and another part located in said transverse
openings to prevent the independent rotation of said frame and body, substantially
as described.
10. The combination of a screw-threaded frame having a transverse opening,
a screw-threaded body having an axial bore provided with screw-threads, a slip-
surface, said body being also provided with a transverse opening, and a stud-nut
to mesh with said transverse openings in said body and frame, substantially as
described.
11. The combination of a frame having a transverse opening and provided with
a screw-threaded portion interrupted by an unthreaded portion, a body having
a transverse opening and provided with a screw-threaded portion interrupted by
an unthreaded portion, and a transversely movable part to mesh with said trans-
verse openings when said screw-threaded portions of said parts are in mesh, sub-
stantially as described.