Improvements in Machines for Duplicating Articles, such as Keys for Locks and the like.
Year: 1896

page_text: Date of Applicatior, 17th Apr., 1896
Complete Specification Left, 21st May, 1895-Accepted, 14th Nov., 1896
PROVISIONAL SPECIFICATION.
Improvements in Machines for Duplicating Articles, such as Keys
for Locks and the like.
I, EDMUND RANDOLPH DARLING, of 129 Main Street, Woonsocket, Rhode
Island, United States of America, Manufacturer, do hereby declare the nature of this
invention to be as follows:-
This invention relates to a machine for duplicating articles having an irregular
surface, and is designed more particularly for duplicating the keys of locks, such as
the keys of Yale locks.
The invention and its many objects and advantages will appear from the following
description.
In carrying the invention into practice I provide a bed-plate having two parallel
transverse slots and two arms which support a shaft or rod. Between these arms
and the slots is a bearing. A slide is adjustably secured to the bed-plate by bolts"
taking into the slots. This slide carries bearings for receiving and supporting the
tool-shaft, which carries a pulley to receive a driving-belt, and on one end of which
shaft is secured the tool or emery-wheel.
The transverse bearing is provided with a horizontal slot and with a socket
consisting of two vertical walls to, receive a friction-roller on the operating-lever, as
presently described. I provide a holder for the guide-piece which holder by means
of a flange and bolt, passing through the horizontal slot is adjustably secured to.the
bearing. The holder is grooved longitudinally, to receive a nut on a threaded stem
of a guide-piece, which should have its outer edge in a plane with the periphery
of the emery-wheel, and in order that it may be adjustable in its bearings the holder
is provided with a transverse hole to receive the threaded stem and the outer end of
said. holder with a recess to receive the guide-piece and prevent it from turning.
On the inner end of the threaded stem is a nut, and on said stem and within the
recess is a lock-nut so that while the guide-piece may be adjusted to. and from the
bearing it is. positively prevented becoming loose when once set in position.
I provide a stock and pattern carriage, sliding transversely to the plane of revolu-.
tion of the emery-wheel, and hinged upon the aforesaid shaft or rod. This carriage
comprises two arms and a plate or bar connected thereby; the whole may be
integral. The bar is provided in its face with a groove or way receiving a section
carrying clamps. This section has a tongue to enter the groove and a bolt, to
secure the section upon the bar. The upper section of this carriage is also the
lower member of the clamp for holding the pattern as well as the blank to be
shaped and is provided with two hinged jaws. The jaws are hinged to the outer
edge of the section, and provided with a hole to receive the threaded bolt. . The
upper section is recessed to receive and seat the pattern and blank, respectively, and
the bolts hold the hinged jaw down on said blank and pattern.
A hand-lever is provided carrying at its inner end a friction-roller, designed to:
enter the socket. This lever is pivoted, so as to slide the carriage thereon on the
shaft.or rod.
In operation a key or other device to be duplicated is placed in one of the clamps.
and a blank in the other clamp. Motion being then imparted to the tool or emery-:
wheel through the medium of the shaft and the pulley, the blank is brought to
engage with the cutting-tool or emery-wheel and the pattern to engage with the.
guide-piece. Then as the friction-roller on the hand-lever has taken into the socket

page_text: of the bearing by moving the hand-lever in the proper direction the carriage is
moved along on the rod, and by holding it firmly with the pattern against the guide-
piece its movement conforms to the outline or configuration of the pattern, so that
the blank, which is also carried by the carriage, is presented to the emery-wheel or
cutting-tool in a similar manner, which necessarily gives the blank the correct shape
of the pattern.
I do not confine myself to such exact construction of parts as described, as I am
aware that many of them will permit of changes and modifications without departing
from the spirit of my invention.
Datad this 17th day of Annil 1906
HASELTINE, LAKE & Co..
45 Southampton Buildings, London, W.C., Agents for the Applicant.
Improvements in Machines for Duplicating Articles, such as Keys
for Locks and the like.
I, EDMUND RANDOLPH DARLING, of 129 Main Street, Woonsocket, Rhode Island,
United States of America, Manufacturer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
This invention relates to a machine for duplicating articles having an irregular
surface, and is designed more particularly for duplicating the keys of locks, such as
the keys of Yale locks. The invention and its many objects and advantages will
appear from the following description and claims, when taken in connection with
the annexed drawings, in which Fig. 1 is a plan view of the machine with the
carriage raised so as to illustrate the parts in an operative position; and Fig. 2 is a
sectional view, taken in the plane indicated by the dotted line ax on Fig. 1 with a
part of the tool or emery-wheel broken away. A indicates the bed-plate. This plate
is provided with two parallel transverse slots b, and with two arms e which support
a shaft or rod B. Between these arms and the slots is a bearing C. D is a
slide adjustably secured to the bed-plate by bolts d, taking in the slots b. This
slide D carries bearings E, said bearings receiving and supporting the tool-shaft F,
which carries a pulley. G to receive a drive-belt; and on one end of this shaft is
secured the tool or emery-wheel H. The transverse bearing C is provided with a
horizontal slot and with a socket g consisting of two vertical walls h to receive
a friction-roller on the operating-lever, as presently described. I is a holder for
the guide-piece. This holder by means of the flange i and bolt j, passing through
the slot, is adjustably secured to the bearing C. The holder. I is grooved
longitudinally, at k to receive a nut on the threaded stem m of the guide-piece n,
which should have its outer edge in a plane with the periphery of the emery-
wheel, and in order that it may be adjustable in its bearings the holder I is
provided with a transverse hole p to receive the threaded stem m and the outer
end of said holder with a recess g to receive the guide-piece and prevent it from
turning. On the inner end of the threaded stem is a nut r. and on said stem and
within the recess k is a lock-nut 1, so that while the guide-piece may be adjusted to
and from the bearing it is positively prevented becoming loose when once set in
position.
J is the stock and pattern carriage, sliding transversely to the plane of revolution
of the emery-wheel, and hinged upon the rod B. This carriage comprises two
arms s and a plate or bar t connected thereby; the whole may be integral. The
bart is provided in its face with a groove or way u, receiving a section K, carrying
clamps. This section K has a tongue to enter the groove u and'a bolt, as shown in
dotted lines, to secure the section K upon the bar t. The upper section K of this

page_text: carriage is also the lower member of the clamp for holding the pattern as well
as the blank to be shaped is provided with two hinged jaws L and M. The jaws
are hinged to the outer edge of the section K, and provided with a hole P to
receive the threaded bolt Q. The section K is recessed at S to receive and seat
the pattern and blank, respectively, and the bolts hold the hinged jaw down on said
blank and pattern.
T is a hand-lever, carrying at its inner end a friction-roller U, designed to enter
the socket g. This lever is pivoted at V, so as to slide the carriage thereon on the
rod B.
In operation a key Y or other device to be duplicated is placed in one of the
clamps L and a blank Z in the other clamp M. Motion being then imparted to
the tool or emery-wheel through the medium of the shaft F and the pulley G,
the blank is brought to engage with the cutting-tool or emery-wheel and the
pattern to engage with the guide-piece n. Then as the friction-roller on the hand-
lever has taken into the socket g of the bearing C by moving the hand-lever in
the proper direction the carriage is moved along on the rod B, and by holding it
firmly with the pattern against the guide-piece its movement conforms to the
outline or configuration of the pattern, so that the blank, which is also carried by
the carriage, is presented to the emery-wheel or cutting-tool in a similar manner,
which necessarily gives the blank the correct shape of the pattern.
I do not confine myself to such exact construction of parts as described, as I
am aware that many of them will permit of changes and modifications without
departing from the spirit of my invention.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1. In a duplicating machine, the base plate having parallel slots crosswise thereof
and arms at its forward end, the bearing C, slotted horizontally in combination
with the slidable frame carrying bearings and adjustable on the bed plate, the tool
shaft journaled in said bearings, the tool on said shaft, the adjustable holder arranged
on the bearing frame C, the guide-piece having a threaded stem seated in said
holder, the nuts on said threaded stem, and a pattern and stock carriage hinged on a
rod bearing in the bed-plate and adapted to hold a pattern and a blank, and a lever
pivoted in the carriage and adapted to engage the socket of the bearing C, substan-
tially as described.
2. In a duplicating machine, the combination with the main frame, having the
bearing C, the slide carrying the tool shaft and adjustable, said bearing being slotted
and provided in its face with the vertical socket g, the carriage hinged to the main
frame by the rod B, and provided with two clamps to receive a pattern and a blank,
respectively, the lever pivoted to the carriage, the inner end of said lever being
adapted to enter the socket, and the guide-piece arranged upon the bearing C, and
adapted to be adjusted both lengthwise and crosswise of the machine, and to also
bear against the pattern, substantially as described.
3. In a duplicating machine, the combination with a main frame, having the bearing C,
of the holder I, provided with the groove k, in its upper edge, the guide-piece n,
having the threaded stem passing through an aperture in the holder, the nuts on
said stem, said holder being adjustably secured to the bearing C, a tool shaft
arranged on one side of the bearing and carrying a grinder, and a carriage hinged
to the main frame on the opposite side of the bearing and adapted to carry a pattern
and a blank, respectively, substantially as described."
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.