Improvements in the Nailing or Fastening of Boots and Shoes, and in Means or Apparatus Employed therein.
Year: 1896

page_text: Date of Application, 7th July, 1896
Complete Specification Left, 5th Apr., 1897-Accepted, 15th May, 1897
PROVISIONAL SPECIFICATION.
Improvements in the Nailing or Fastening of Boots and Shoes, and
in Means or Apparatus Employed therein.
I, JAMES WILLSON BROOKS of Petersham, in the County of Worcester, and
State of Massachusetts, United States of America, Manufacturer do hereby.
declare the nature of this invention to be as follows:-
In the manufacture of boots and shoes round, threaded, corrugated, and other
varieties of wire are cut off to form nails or fastenings to be driven by a machine
into the outer sole to confine it to the upper and inner sole, the length of the wire
being automatically varied according to the thickness of the material into which
it is to be driven, but usually the heels are attached to the sole by another machine
using a different fastening, and a tread lift is attached to the heel by spanking the
same, as it is called, onto the ends of the partially driven nails or fastening used
to confine the heel to the sole.
It is sometimes required that the tread lifts, and sometimes the heels, be united
to the sole by slugs made from a ribbon of wire quadrangular in cross-section, and
to do this latter work special machines have been devised.
The invention comprehends a machine which with but slight changes in some of
its parts may be readily adapted for driving a wire of any desired shape in cross-
section, thus extending the range of one and the same machine to a great variety
of work.
The machine embodying the invention when used for uniting an outer sole to an
inner sole of a lasted boot or shoe has means to automatically adapt the fastening
to the thickness of the stock, but when the machine is used for slugging a heel or
quilting a sole, the length of fastening in such case being uniform, the devices for
varying the feed of the wire may be rendered inoperative and the feed of the wire
made uniform.
The automatically variable feed or the uniform feed of the wire is accomplished
by providing the wire feeding mechanism with what may be termed a measuring
gate, which is adapted to be turned aside when the feeding of the wire is to be
uniform.
The awl and driver are actuated positively in both directions, preferably by
cams, rather than by a cam in one direction and a spring in the other direction,
as is the more usual practice.
The cutting mechanism for the wire is simplified and improved, and also the
means which move the nose from cutting position into position to let the nail or
fastening be acted upon by the driver.
The frame work of the apparatus consists of a column having at its upper end
a head so shaped as to constitute bearings or supports for the various working
parts, the base of the column in practice resting on the floor, and the horn upon
which the work is supported is actuated so that the horn is lowered after each
fastening has been driven and while an awl feeds the work, a spring normally
pressing the horn upwards during the driving operation.
The horn, by means of stop-rod, controls a measuring gate, the latter being
used only when the machine is employed for driving fastenings for uniting the
sole to the shoe, the said gate acting as a stop for a measuring leg which is
suitably connected with and to control a wire feeding wheel scored or serrated at
its periphery to engage and feed the wire being used.

page_text: The measuring gate rises and falls with the stop-rod and consequently, the gate
when in working position acts to stop the descent of the measuring leg sooner or
later to thus effect, through the connecting mechanism, a greater or less movement
of the feed wheel to thus feed a greater or less length of the wire into the nose
or carrier, such operation being automatic, to thereby provide for the length of
fastening desired.
The wire guide is located just helow the feeding wheel and is composed of two
plates, one of which is provided with a guiding groove for the wire to be driven,
the said groove being shaped to enrrespond substantially with the cross-section
of the wire and to readily change from one kind of wire to another, the "groove
plate may be readily removed from the machine.
A driver bar is mounted in suitable guideways behind the fixed face plate of the
head of the machine and a driver is suitably attached to the driver bar, said driver
at its lower end entering a driver passage in a guide mounted on the head of the
machine, and the awl is attached to the lower end of an awl bar, provided at one
side with teeth, which are engaged by the teeth of an arm forming part of a two-
armed lever mounted upon a stud screw and having a second arm provided with a
roller or other stud which enters a groove in the outer face of the cam hub fast
upon the outer end of the main shaft.
The rear side of the cam hub is provided with a cam groove to receive a roller
or stud extended from the front of the driver bar, said cam reciprocating said
driver bar positively up and down.
The shank of the awl-bar is adapted to slide vertically in guide-ways in a
rocking-frame provided with a hub which embraces a hub surrounding the main
shaft, and the rocking-frame has attached to it at its front side a movable side
guide for the awl-bar in its vertical movement, and at its rear side the rocking-
frame has attached to it a guide-way having a movable side of a second guide-
way, in the latter of which is placed a swivel block, which is entered by a pin
extended from a dóve-tailed slide, provided at one face with toeth.
The slide fits into a dovetailed passage in a rocking arm on a short rock shaft
which is actuated by a suitable cam, the rock-shaft by engaging the sliding block,
moving the rocking frame to effect the feeding of the material, while the awl is in
it, over the horn.
The arm on the rock shaft carries a short stud gear, the teeth of which engage
the teeth of the dove-tailed slide, and moves it with relation to the arm and
rocking-frame to alter at will the length of the feed.
The main shaft has a cato provided at its periphery with a groove in which
enters a roller or other stud of a toothed lever pivoted at its upper end to the
frame work, the lower end of the lever having rack-teeth to engage the teeth of
a block having within it a series of threads or annular rings and projections which
fit a series of threads or annular rings and projections on a shaft which is milled
for the greater part of its length to constitute splines; the said shaft at its forward
end having attached to it a two-part throat.
The end of the wire is fed from the wire guide into this throat, and when of the
proper length is cut off as will be described, and then the throat is moved with the
fastening into the path of the movement of the driver.
The throat referred to has a longitudinal movement from the position under the
guide-way for the wire to the position occupied by the driver, the lever referred to
effecting such movement.
The throat receives the wire fro.n an inclined wire passage, and the driver works
in a vertical line, so the throat has to be tipped slightly in passing from one to
its other position, and this tipping movement is effected by means of an internally
Hluted sleeve upon the milled shait to fit the flutes or splines thereof, and upon
this sleeve is mounted a lever having a roller or other stud to be actuated by
a cam.
This milled shaft may slide backwards and forwards to a limited extent within
he sleeve and toothed block referred to, and by reason of its peculiar connection

page_text: with the shaft by grooves and rings, permits the shaft to be rocked and reciprocated
at the same time without either movement affecting the other.
The movable cutting blade is held in adjusted position in suitable manner and
the stationary cutter is held between the head of the machine and a detachable cap.
When the wire has been fed into the movable throat for the proper distance, the
sleeve referred to will be rocked to cause the movable blade or cutter to pass the
lower end of the guide-way for the wire and cut the wire off, and at the same time
the throat will be tipped into its substantially vertical position, so that when it is
moved forward, the hole in the throat will come properly under the driver to enable
the latter to strike the nail or fastening therein and drive it out from the throat.
During the forward movement of the throat containing the loose fastening, the
lower end of the fastening may ride on the top of a foot until the throat has been
moved far enough to come opposite the hole therein in which the awl works
when feeding the material and through which the fastening passes into the
work.
When it is desired to change from nailing the sole to slugging the heel or
quilting the sole, the operator will turn aside the measuring gate, and if a radically
different wire as to size and shape is to be used, the wire-guide may be changed,
the driver and throat to one having an opening of the desired shape in cross
section.
Upon the head of the machine is pivoted an arm provided with a gange having
at its underside suitable teeth to he engaged by the teeth of a hand shaft, the
gauge being adjustable on the arm in order to place the fastening at the proper
distance from the edge of the sole, the apparatus being turned down out of the
way when it is desired to slug a heel or quilt soles.
The arm referred to has two flattened portions against which acts a spring
pressed pin, it holding said arm either in its working or in its inoperative position,
as desired.
The head of the machine has a socket at its top provided with suitable notches,
into which socket is fitted a pin or post having projections either of which may
engage the said notch and the said post has a plurality of studs on each of which
is mounted a wire carrying spool containing different kinds of wire according to
the work to be done.
The rod may be rotated more or less, as desired, to bring one or the other of
said projections into the notch, thus bringing one or the other of the said spools.
into position according to the wire it is desired to use.
The upper end of the spool is provided with guides for the shanks or brakes,
which, acting by gravity, bear upon the surface of the wire on the spool and
prevent it from over-running.
The mechanism for rotating the main shaft at desired times and the devices for
controlling the same, as well as the brake, inay be such as are commonly used in
other nailing machines..
The pressure wheel co-operating with the feed wheel has an annular V-shaped
groove in its periphery, and at each side of the said groove the periphery of the
wheel is serrated or scored, as are also the walls of the said groove.
This pressure wheel acts upon the wire being used, of whatever cross section,
and presses the same against the scored periphery of the feeding wheel.
Providing the pressure wheel with a V-shaped groove enables it to receive the
wire of most any cross section, and the V-shaped groove enables a portion of the
wire to enter more or less and bind therein.
The scored periphery of the pressure wheel, on the contrary, may act on the flat
side of the wire and press the opposite flat side against the feed wheel.
Dated the 6th day of July 1896.
WM. BROOKES & SON,
55 & 56 Chancery Lane, London, Agents for the Applicant.

page_text: Improvements in the Nailing or Fastening of Boots and Shoes, and
in Means or Apparatus Employed therein.
I JAMES WILLSON BROOKS of Petersham, in the County of Worcester and
State of Massachusetts, United States of America, Manufacturer 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:-
In the manufacture of boots and shoes round, threaded, corrugated, and other
varieties of wire are cut off to form nails or fastenings to be driven by a machine
into the outer sole to confine it to the upper and inner sole, the length of the wire
being automatically varied according to the thickness of the material into which it
is to be driven, but usually the heels are attached to the sole by another machine
using a different fastening, and a tread lift is attached to the heel by spanking the
same, as it is called, onto the ends of the partially driven nails or fastening used to
confine the heel to the sole.
It is sometimes required that the tread lifts, and sometimes the beels, be united
to the sole by slugs made from a ribbon of wire quadrangular in cross-section, and
to do this latter work special machines have been devised.
The invention comprehends a machine which with but slight changes in some of
its parts may be readily adapted for driving a wire of any desired shape in cross-
section, thus extending the range of one and the same machine to a great variety
of work.
The machine embodying the invention when used for uniting an outer sole to an
inner sole of a lasted boot or shoe has means to automatically adapt the fastening
to the thickness of the stock, but when the machine is used for slugging a heel or
quilting a sole, the length of fastening in such case being uniform, the devices for
varying the feed of the wire may be rendered inoperative and the feed of the wire
made uniform.
The automatically variable feed or the uniform feed of the wire is accomplished
by providing the wire feeding mechanism with what may be termed a measuring
gate, which is adapted to be turned aside when the feeding of the wire is to be
uniform.
The awl and driver are actuated positively in both directions, preferably by
cams, rather than by a cam in one direction and a spring in the other direction, as
is the more usual practice.
The cutting mechanism for the wire is simplified and improved, and also the
means which move the nose from cutting position into position to let the nail or
fastening be acted upon by the driver.
Figure 1 is a right-hand side elevation of the upper part of a nailing-machine
embodying my invention, the column having the base to rest on the floor having
been omitted, as well as the usual treadles connected therewith.
Fig. 2 is a left hand side elevation of the upper part of the machine, the horn
shown in Fig. 1 having been omitted.
Fig. 2 is a top or plan view of the wire feeding devices to be referred to.
Fig. 3 is a front elevation of the upper part of the machine shown in Fig. 2;
Fig. 34, a view of the foot h, enlarged.
Fig. 4 shows the cam in detail.
Fig. 5 is a section in about the dotted line z, Figs. 1 and 2 looking toward the
rear; Fig. 5, a sectional detail in the line 3, Fig. 5, showing the block d' and
the gear for adjusting it. Fig. 6 is an enlarged sectional detail in about the line ',.
Fig. 2.

page_text: Fig. 7 is an enlarged longitudinal sectional detail chiefly to show the nose or
nail-carrier and its operative parts.
Fig. 7 shows the throat e in detail.
Fig. 8 is a section in the line ³, Fig. 7.
Fig. 9 is a detail showing the multi-spool-holder for the different kinds of wire ;.
Fig. 10 an enlarged detail view of the guide 68.
The framework consists, essentially, of a column A, having at its upper end a
head A shaped to constitute bearings or supports for the various working parts,
the base of said column, which in practice rests on the floor, being omitted.
Before describing in detail my improved machine I will say that the horn B, the
arm G, extended laterally from the horn shaft; the stop rol G', connected to said
arm and rising and falling in unison with the horn to automatically control the
length of the wire fed to correspond with the thickness of the work on the horn and
the lever B, having connected to it the rod BB connected in practice to a lever not.
shown attached to the horn shaft, so that the horn is lowered after each fastening
has been driven and while the awl to be described feeds the work, said horn-shaft
in practice being normally pressed upwardly by a spring during the driving
operating, are all substantially as shown in the Specification of Letters Patent.
No. 787 dated 20th January 1885, so do not require to be herein further
described.
The stop rod G' slides at its upper end in a guide a, and said rod has mounted
loosely on it a measuring-2ate a', which when in its operative position, as shown by
full lines, Fig. 1, (it being used only when the machine is being used for driving
fastenings for uniting the sole to the shoe,) acts as a stop for the measuring leg a²,.
also found in said patent, said leg being connected with an arm of a pawl-carrying
sleeve a (see Figs. 1, 2 and 5,) said sleeve having another arm a, provided with.
spring-controlled pawls a', (see Fig. 6,) which act on the toothed periphery of a.
ratchet wheel a, connected to or forming part of a wire-feeding wheel a', suitably
scored or serrated at its periphery to engage and feed the wire w being used, said
wire being pressed against said serrated surface by a pressure wheel a', mounted in.
a yoke or frame a, adjustably attached to the framework by a screw a, sajd
pressure-wheel having an annular V-shaped groove, the periphery of said wheel at
each side said groove being serrated to bear against one side of a flattened wire,.
the wall of the groove being also serrated to afford projections to engage either a..
quadrangular, square, round, or oval, or other shaped wire a portion of which may
enter said groove.
The groove also acts to align the wire with the wire-passages below.
The measuring-gate rises and falls with the stop-rod connected, as stated, to the
horn, and consequently said gate when in working position, as in Figs. 1 and 3, acts.
to stop the descent of the leg a sooner or later, and consequently shorten the back."
stroke of the pawls a' to thus effect at their next forward stroke a greater or less
movement of the feed wheel, to thus feed a greater or less length of the wire into the
nose or carrier e, to be described, this operation being automatic, to thus provide
for the length of fastening desired.
A roller or other stud a¹ on a third arm of the pawl carrying sleeve a³ is acted
upon by a can-surface a¹ (see Fig. 5) at one side of the cam as, said cam surface
having a depression or space a" into which the said roller or other stud a⁰ enters,.
as required, when the pawl carrier is moving on its back stroke to assume a
starting-point, the roll entering said space more or less, according to the thickness.
of the stock, to thus provide for the required length of feed stroke next to be
made.
b
The wire-guide (shown best in Fig. 6 and located just below the feeding-wheel).
is composed of two plates b, b', the plate 6 being provided next the plate 6' with a
guiding groove for the wire to be driven, the said groove being shaped to correspond
substantially with 'the cross-section of the wire, whether round, flat, or otherwise,
and to readily change from round to flat wire, or vice versa, the plate b may be
readily removed from the machine, first by taking off, however, the frame a³ carrying

page_text: the wheel a². The lower end of the plate 61 is provided with a steel wear
plate
The driver bar is mounted in suitable guideways behind the fixed face-
plate of the head of the machine, said driver-bar having attached to it by a
suitable screw a driver 66, which at its lower end enters a driver-passage 7 (sec
Fig. 10) in a guide 68, connected to or forming part of a plate b, attached to the
head of the machine by screws 10, the edge of the said plate constituting a side
guide for one side of the said driver bar.
The awl c is attached to the lower end of an awl-bar c', provided at one side
(sce dotted lines, Fig. 3) with teeth, which are engaged by teeth of an arm c²
forming part of a two armed lever mounted upon a stud-screw e³ and having a
second arm e, which is provided with a roller or other stud, (see Fig. 3,) which
enters a groove c in the outer face of the cam hub ce fast upon the outer end of the
main shaft c².
The rear side of the cam-hub c is provided (see dotted lines Fig. 3) with a cam
groove e, which receives a roller or other stud c, (see dotted lines, Fig. 3) extended
from the front of the driver bar, said can reciprocating said driver-bar positively
up and down.
The shank of the awl-bar is adapted to slide vertically in guideways in a rocking
frame d, having a sleeve-like hub d, which embraces a hub surrounding the main
shaft in front of the cam hub a¹³. The rocking frame has attached to it at its
front side by suitable screws the movable side guide d' for the awl-bar in its
vertical movement, and at its rear side said rocking frame has attached to it a
guideway having a movable side d³ of a guideway (see Fig. 1) in which guideway
is placed a swivel block d', (see Figs. 5 and 54,) which is entered by a pin 40
extended from a dovetailed slide d³, provided at one face with teeth, said slide being
fitted into a dovetailed passage in a rocking arm a, connected to a short rock
shaft do, having an arm d', provided with a roller-stub which enters a cam grooved
(see Fig. 5) at the outer side of the cam-hub a¹³, said rock-shaft, by engaging the
sliding block, moving the rocking frame to effect the feeding of the material, while
the awl is in it, over the horn.
The arm dreferred to carries a short studgear do, (see Fig. 5A,) the teeth of
which engage the teeth of slide d' and moves it with relation to the said arm and
rocking frame to alter at will the length of the feed.
The main shaft has a cam e provided at its periphery with a groove in which is
entered a roller or other stud of a toothed lever e', pivoted at its upper end on a
stud on the framework, the lower end of said lever having, as shown in Fig. 2, rack
teeth to engage the teeth of a block e², (see also Fig. 7); having within it a series
of threads or annular rings and projections which fit a series of threads or
annular rings and projections on a shaft e, which for the greater part of its
length is milled, as at e, to constitute splines, said shaft at its forward
end having attached to it a throat e composed of two parts. (Shown
separated in Fig. 7.) The end of the wire is fed from the wire guide
into this throat and when of the proper length is cut off, as will be described,
and then the throat is moved with the fastening into the path of movement
of the driver. The throat referred to has a longitudinal movement from the
position under the guideway for the wire to the position occupied by the driver,
such movement being effected by the lever e¹ referred to. The throat receives the
wire from an inclined wire-passage, and the driver works in a vertical line, so the
throat has to be tipped slightly in passing from one into its other position, and to
effect this tipping movement I bave placed upon the milled body of the shaft e³ a
sleeve e fluted internally to fit the flutes or splines of said shaft, and also
preferably for a short distance externally, (see right of Figs. 7 and 8) and upon
this sleeve I have mounted a lever e, having a roller or other stud to enter a cam-
groove at the rear side of the cam hub a. "It will be understood that the shaft e³
may slide backward and forward to a limited extent within the said sleeve e8, and

page_text: the block e, by reason of its peculiar connection with sail shaft by grooves and
rings, permits the shaft to be rocked and reciprocated at the same time without
either movement affecting the other.
The movable cutting-blade f (see Fig. 6.) is held in adjusted position by mens
of a cap-plate 2 and a screw 3 upon au arm f¹ of the sleeve e³.
The stationary cutter is represented as held between the head of the machine
and a detachable cap 4, held in place by a suitable set-screw.
When the wire has been fed into the movable throat for the proper distance, the
sleeve referred to, will be rocked to cause the movable blade or cutter to pass the
lower end of the guide way for the wire and cut the wire off, and at the same time
the throat will be tipped into its substantially vertical position, so that when it is
moved forward, as described, the hole in the throat will come properly under the
driver to enable the latter to strike the nail or fastening therein and drive it out
from the throat. During the forward movement of the throat containing the
loose fastening, the lower end of the fastening may ride on the top of a foot h
until the throat has been moved far enough to come opposite the hole ' therein,
the hole in which the awl works when feeding the material, and through which the
fastening passes into the work.
When it is desired to change from nailing the sole to slugging the heel or
quilting the sole, the operator will turn aside the measuring gate a', and if a
radically different wire as to size and shape is to be used, the wire guide may be
changed, the driver and throat e to oue having an opening of the desired shape in
cross section.
b
I have pivotted at 60 upon the head of the machine an arm m, provided with a
gauge m having at its underside suitable teeth to be engaged by the teeth of
a hand-shaft m2, the gauge being adjustable on the arm in order to place the
fastenings at the proper distance from the edge of the sole the entire apparatus
being turned down out of the way when it is desired to slug a heel or quilt soles.
The arm referred to has two flattened portions 6, 7, against which acts a spring-
pressed pin 8, it holding said arm either in its working or in its inoperative position,
as desired.
The head of the machine has a socket n, at its top provided with suitable
notches n', and into this socket is fitted a pin n² or post, having a series of
projections n³, either of which may engage the said notch, and the said post has, as
herein represented, three studs, on which are mounted three wire carrying
spools n nn, containing different kinds of wire, either round, square, or flat,
according to the work to be done. The rod n³ may be rotated more or less, as
desired, to bring one or the other of said projections into the notch, thus bringing
one or the other of the said spools into working position, according to which wire
it is desired to use. The upper end of the spool is represented as provided with
guides n' for the shanks of brakes n8, which, acting by gravity, bear upon the
surface of the wire on the spool and prevent it from over running.
The clutch pulley mechanism for rotating the main shaft at desired times and
the devices for controlling the same, as well as the brake, are and may be common
to other nailing-machines.
The pressure wheel a (see Fig. 2A) has an annular V-shaped groove in its
periphery, and at each side of said groove the periphery of said wheel is serrated
or scored, as are also the walls of said groove. This pressure wheel acts upon the
wire being used, of whatever cross-section, and presses the same against the scored
periphery of the feeding wheel a*.
Providing the pressure-wheel with a V-shaped groove enables it to receive a
wire of almost any cross-section such, for instance as square, round, oval, etcetera,
and the V-shaped groove enables a portion of the wire to enter more or less and
bind therein. The scored periphery of the pressure-wheel, on the contrary, may
act on the flat side of a wire and press the opposite flat side against the feeding
heal

page_text: 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
clain is
1. In a nailing machine, the horn, its spindle, its attached arm and rod free to
rise and fall with the horn, the wire-feeding wheel, its actuating-pawl, and
measuring-leg, combined with the movable measuring-gate, to operate, substantially
as described.
2. The hollow sleeve e, the movable cutter member operatively connected
therewith, a complemental cutter blade, a wire-guide, wire feeding mechanism, a
driver bar having a driver, and a shaft located within said sleeve and provided
with a nail receiving throat, combined with devices to rotate said sleeve and with
it said shaft to not only actuate the cutter, but also to oscillate said throat, and
devices to reciprocate said shaft in said sleeve to enable the throat attached thereto
to be put into position with the fastening contained in it in the path of movement
of said driver, substantially as described.
3. The movable frame, having guideways for the awl-bar, and a block-receiving
guideway, and a rock-shaft having an arm provided with a guideway, combined
with a slide-block and pinion intermediate said block-receiving guideway and said
arm, whereby by adjustment of said slide-block by said pinion the length of feed
effected by the awl carried by the awl-bar may be quickly regulated, substantially
- as described.
4. In a nailing-machine for forming nails from a continuous length of wire, the
following instrumentalities, viz. :a wire-guideway composed of two pieces b, b', one
of said pieces being grooved to receive the wire, the other piece presenting a plain
or ungrooved face to the wire, feeding mechanism to feed the wire through said
guideway, and cutting mechanism to sever the said wire into nail lengths, the
provision of making the wire receiving groove wholly in one-half the guideway
enabling said half to be readily changed to adapt the machine to the use of wires
of different cross-sections, substantially as described.
5. In a nailing-machine for forming nails from a continuous length of wire, the
following instrumentalities viz.: a wire-guideway composed of two pieces b, b', one
of said pieces being grooved to receive the wire, the other piece presenting a plane
or ungrooved face to the wire, feeding mechanism to feed the wire through said
guideway, and cutting mechanism to sever the said wire into nail lengths, a throat
to receive said nail, and devices to rock said throat and to move it into position to
place the nail carried by it under a driver, substantially as described.
6. In a nailing-machine, the following instrumentalities viz. a throat pivotally
supported midway between its ends, to receive a nail, a foot to rest upon the work
and having a groove at its upper side to receive and guide the lower end of said
throat, as it is rocked, and having also a nail-passage leading from the bottom of
said groove, combined with means to rock said throat from the position where it
receives a nail into position to have a nail driven therefrom, the foot supporting the
nail while the throat is rocked, substantially as described.
7. In a nailing-machine, an awl-bar having an awl, a movable frame having a
guideway for said awl-bar and a block-receiving guideway; and a rock shaft
having an arm provided with a guideway which is split for part of its length,
combined with a toothed slide having a pivoted block to enter the guideway of
said movable frame; and a stud-pinion adapted to engage the said toothed slide,
and means co-operating with said pinion and guide-way to lock the toothed slide in
place after the same has been adjusted, substantially as described.
Dated the 2nd day of April 1897.
WM. BROOKES & SON,
55 & 56 Chancery Lane, London, Agents for the Applicant.