DISCLAI MEMORANDUM
Year: 1869

page_text: BLAKE & GOODYEAR BOOT AND SHOE MACHINERY COMPANY'S
DISCLAIMER AND MEMORANDUM OF ALTERATION.
Filed 3rd January 1880.
[LAKE'S PATENT.]
In the Matter of Letters Patent granted to WILLIAM ROBERT LAKE, of the
"International Patent Office," No.. 8, Southampton Buildings, London,
Consulting Engineer, for the Invention of "IMPROVEMENTS IN MACHINES
FOR SEWING BOOTS AND SHOES." A communication from abroad by
Daniel Mills, of Brooklyn, New York, United States of America, Machinist,
dated 14 June 1869, No. 1823, which Letters Patent and all right, title,
and interest therein are now vested in the Blake & Goodyear Boot and
Shoe Machinery Company (Limited), of No. 1, Worship Street Finsbury,
in the County of Middlesex.
DISCLAIMER AND MEMORANDUM OF ALTERATION proposed to be
entered by the said Company.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters Patent
bearing date the 14th day of June, in the year of our Lord One thousand eight
hundred and sixty nine, in the thirty second year of Her reign, did, for Herself,
Her heirs and successors, give and grant unto the said William Robert Lake, his
executors, administrators, and assigns, the sole privilege of making, using, exercising,
and vending within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and the Isle of Man, the said Invention for "IMPROVEMENTS IN MACHINES
FOR SEWING BOOTS AND SHOES," for and during the term of fourteen years thence
next ensuing:
And whereas, in pursuance of a proviso contained in the said Letters Patent, the
said William Robert Lake did, within six calendar months next and immediately
after the date of the said Letters Patent, cause a Specification of the said Invention
to be filed in the Great Seal Patent Office:
And whereas by an assignment dated the Twenty first day of January, One
thousand eight hundred and seventy, and by various mesne assignments, and
ultimately by an Indenture dated the Thirty first day of August, One thousand
eight hundred and seventy six, the said Letters Patent and all right, title, and
interest in and to the same became vested in the said Company:
And whereas since the said Letters Patent were so assigned we have been

page_text: advised, and have reason to believe that certain portions of the Invention described
and claimed in the said Specification were not new in respect of the public
knowledge, and use thereof, at the date of the said Letters Patent, and that the
description of a portion of the said Invention is ambiguous by reason of mis-
placement of the letters of reference in the Drawings accompanying the said.
Specification.
NOW KNOW YE therefore that we, the said Blake and Goodyear Boot and
Shoe Machinery Company (Limited), by and with the consent of Her Majesty's
Attorney General, do alter and amend the said Specification as follows, that is to
say-Referring to the Queen's Printers' copy of the said Specification, on page 6
we strike out the whole of the matter in the third line, and in the subsequent lines
between the same and the twenty third line, and in the 23rd line we strike out
the word "Tenth," and substitute therefor the word "Eighth." In the 27th line
we strike out the word "Eleventh," and substitute therefor the word "Ninth." In
the 33rd line we strike out the word "Twelfth," and substitute therefor the word
"Tenth;" and in the 37th line we strike out the word "Thirteenth," and substi-
tute therefor the word "Eleventh." And in Figures 3 and 4 of the Drawings wo
erase the letter "I," and substitute for it the letter "J," and we replace the
letter "G" in Figure 3 by the letter "I."
And in order that the effect of the said Disclaimer and Memorandum of Alteration
may be fully understood we annex a copy of the Specification and Drawing as they
will appear when such Disclaimer and Memorandum of Alteration have been
made, omitting the introductory and concluding clauses of the said Specification.
"NOW KNOW YE, that I, the said William Robert Lake, do hereby declare
"the nature of the said Invention, and in what manner the same is to be performed,
"to be particularly described and ascertained in and by the following statement,
"reference being had to the accompanying Drawings forming a part of this Specifi-
"cation:-
"
"This Invention relates to a sewing machine which is particularly intended for
"turned work, so called, that is, where the uppers of boots and shoes are sewed
directly to their soles, the work being reversed or turned inside out during the
" operation of sewing. The said machine is also adapted for sewing on welts to
"insoles and uppers.
"The said Invention consists,-
"First. In securing the needle (which is curved) in an oscillating lever of the
"third order, operated by a suitable cam in such a manner that the power is applied
to the needle lever, as close as possible to its free end, whereby the requisite power
is obtained to force the needle through leather or other thick material, as herein-
"after set forth.
"
"Second. In giving a reciprocating rotary motion to the looper by the action of
"a rack and pinion, the said rack receiving its motion from a cam and lever, as
" hereinafter set forth.
"Third. In placing the fulerum of the feed lever at or nearly at a level with the
"work to be sewn, so as to cause the feed dog to come down squarely upon the
"work.
"Fourth. In suspending the feed dog from a pivot so arranged that it hangs in
"such a position that both the roller which runs in contact with the operating cam
"and the end of the lever which rests on the work are on the same side of a
vertical line passing through the said pivot. By this arrangement the working
"face of the feed dog is placed in such a situation in relation to the pivot which
"forms its fulerum, and to the working end of the roller arin, that by the action of
"the said feed dog on the work the roller stud is pressed up against and held in
contact with its cam.
"Fifth. In the arrangement of a gauge which will yield to the sinuosities of the
"work and yet be too rigid at the time the needle passes through the work, as
"hereinafter set forth,

page_text: "
"Sixth. In the arrangement of a locking lever which serves to retain the said
gauge and render the same rigid at the proper intervals, that is, when the needle
passes through the work, as herein-after set forth.
Seventh. In the arrangement of a set screw passing through the locking lover,
"and acting on a slide which acts on the gauge in such a manner that the said
gauge can at all times be locked with the required degree of tightness.
"
"Eighth. In providing an edge gauge so constructed and arranged as to serve as
"a welt guide, whereby the same mechanism is used for sewing on welts to the
insole and upper, the edge gauge for turned work being removed and the other
"substituted for it.
"Ninth. In an edge gauge constructed and arranged so that it turns the inner
edge of the welt outward from the upper or work at the point where the stitching
"takes place, and causes it to be presented at a right angle or nearly so to the
"needle, the needle then passing through it squarely instead of obliquely, as it
"would do if the welt were not so bent up.
"Tenth. Also in combining with the said edge gauge a slotted projection or
looped piece which carries the welt and holds it up in the proper position for
"delivery to the said edge gauge, so that it cannot fall out of the edge gauge while
the work is going on.
"Eleventh. In a last holder of peculiar construction and arrangement, as herein-
"after set forth, whereby the ends of the work are raised and lowered, or presented
"at different levels as the sewing proceeds, so that the work is presented properly
"to the needle, or to the needle and awl in machines where both a needle and an
"awl are used. The said last holder is pivotted on its under side forward of its
"centre to a base plate, which is free to slide on the table or other support when-
"ever impelled by the feed dog acting on the work, such sliding taking place only
"when that part of the last holder on which the feed dog is acting for the moment
"has a solid bearing on the base plate; when it has not such solid bearing the feed
"dog by its pressure tilts the last holder downward against spring slides arranged
"on the base plate, and which are brought into action by the operator when he
"desires the shoe to tilt. The extent of the tilting is regulated by means of
"adjusting screws. The last holder is placed on a table, which is forced upwards by
"means of a weight or spring, so that the work will be always pressed up against
"the surface of a channel gauge.
"Having thus set forth the peculiar features of the said Invention, I will now
"proceed more fully to describe the manner of carrying the same into practice.
"DESCRIPTION OF THE DRAWINGS.
"Figure 1 is a side elevation of my machine; and Figure 2 is a front view of
"the same partly in section; Figures 3 and 4 are detached views illustrative of the
"operation of the aforesaid edge gauge and parts connected therewith; Figure 5 is
a plan of the improved last holder; Figure 6 is a section on the line X, X,
"Figure 5. Like letters indicate the same parts throughout the Drawings.
"
"A represents the frame which forms the bearing for the shaft B, whereon are
"mounted the cam dises C, C, that impart motion to the various parts of the eaid
"sewing mechanism. Through the upper part of the frame extends a rod or
"spindle D, which forms the fulcrum for two levers E, E', of the third order; in
"the loose end of the lever E is secured the needle a, as clearly shewn in Figure 1.
"An oscillating motion is imparted to the lever E by a cam groove in the disc C,
"and this cam groove acts on a roller stud a secured to the said lever between the
"needle and the fulcrum D, so that the operative force is applied to the said lever
"as close to the needle as possible, thereby applying in an advantageous manner
"the power required to cause the needle to puss through the leather or other thick
"material. The said lever works in a guide way near its free end, and is thereby
kept from swinging sufficiently to disturb the correct operation of the mechanism.
"The thread is delivered to the needle by the looper F which is secured to the
tubular arbor e, to which a reciprocating revolving motion is imparted by the
"

page_text: "
"
"
"action of the rack d and pinion e, the said rack being operated by a lever e
receiving the required reciprocating motion from a cam groove in the disc c
"By this reciprocating revolving motion of the looper the thread is carried round
"the barb of the needle. The tubular arbor c is exposed to the flame of a
lamp or gas burner, so that the thread in passing through the same becomes
I heated. The required feed motion is imparted to the work by the feed
dog G, which has its fulcrum on the loose end of the feed lever H, and
"receives an oscillating motion by the action of a cam on the side of the
"disc C. The feed lever H has its fulcrum on a pivot f, situated as herein-
"before specified at or nearly at a level with the work, and it receives an
"oscillating motion from a cam groove in the side of the disc C. By placing the
"fulcrum of the feed lever on or near a level with the work it will be seen that
"the point of the feed dog is brought down squarely or nearly so on the work,
"which is not the case if the said fulcrum is situated higher or lower than the level
"of the work. The connection between the feed dog and feed lever is effected by
"a pivot g projecting from the loose end of the feed lever and passing through an
"eye h formed on the edge of the feed dog opposite the arm which carries the
"roller; acting against a cam on the disc C for the purpose of producing the
required feed motion. By this position of the eye h in relation to the point of
"the feed dog and to the arm i the said arm is turned in towards its cam
"whenever the feed dog strikes the work, and the feed motion is rendered sure and
"uniform throughout the length of the stitch. When the said lever is not acting
"on the work it is brought up to a screw stop by a spring i. The said stop is
"adjustable and serves to regulate the length of the stitch. The work is guided
by the channel gauge I, and it is pressed up against this gauge by the spring
gauge J which bears on the edge of the work, and being made yielding as herein-
"before described it will follow the sinuosities thereof. This gauge serves to retain
"the work against the thrust of the needle, and is locked just before the needle
"strikes the work by means of the lever K operated by a cam on the disc C. This
"lever has its fulcrum on a pivot J, and it actuates a slide which locks the gauge J.
"In Figures 5 and 6 7 is the last holder which is pivotted to the base plate m, as
"herein-before described, at n; o, p, are the slides which are formed with the
"handles o¹, p¹, whereby they can be conveniently moved in or out upon the base;
#1 q, 7, 8, are the adjusting screws.
"
"
"Having now fully described the said Invention as communicated to me by my
foreign correspondent, and the manner of conveniently and advantageously
"carrying the same into practice, I claim the said Invention consisting of the
"peculiar features herein-before described, substantially as and for the purposes set
" forth."
In witness whereof, we, Ebenezer Pocock and Charles Frederic Gardner,
Directors of the Blake and Goodyear Boot and Shoe Machinery Company,
(Limited), have on behalf of said Company set our hands and seals, and
3
Signed, sealed, and delivered by the within-1
named Ebenezer Pocock and Charles
Frederic Gardner, and the common seal
of the Blake & Goodyear Boot & Shoe
Machinery Company, Limited, hereunto
affixed by order of the Board in the
presence of

page_text: I hereby grant my fiat, giving leave to the above named Blake and Goodyear
Boot and Shoe Machinery Company (Limited), to file in the Great Seal Patent
Office, with the Specification to which the same relates, the above written Disclaimer
and Memorandum of Alteration.

page_text: LETTERS PATENT to William Robert Lake, of the "International
Patent Office," No. 8, Southampton Buildings, London, Consulting
Engineer, for the Invention of "IMPROVEMENTS IN MACHINES FOR
SEWING BOOTS AND SHOES."-A communication from abroad by Daniel
Milla of Brooklyn New York United States of Amerion Machinist
Sealed the 3rd December 1869, and dated the 14th June 1869.
PROVISIONAL SPECIFICATION left by the said William Robert Lake
at the Office of the Commissioners of Patents, with his Petition,
on the 14th June 1869.
I, WILLIAM ROBERT LAKE, of the "International Patent Office," No.
8, Southampton Buildings, London, Consulting Engineer, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN MACHINES
FOR SEWING BOOTS AND SHOES," a communication, to be as follows:-
This Invention relates to a sewing machine which is intended for
"turned work," so called, or work were the "uppers" of boots and
shoes are sewed directly to their soles, the work being inside out during
the operation of sewing, which machine is also adapted for sewing on
welts to insoles and uppers.

page_text: The said Invention consists,―
First. In securing the needle (which is curved) in an oscillating lever of
the third order, operated by a suitable cam in such a manner that the power
is applied to, the needle lever as close as possible to its free end, and the
requisite power is obtained to enable the needle to pass through leather or
other thick material without danger of breaking the lever, or causing it to
spring enough to endanger the correct operation of the sewing mechanism.
Second. In giving a reciprocating rotary motion to the looper by
the action of a rack and pinion, the said rack, receiving its motion by
a cam lever and spring, the pinion being cut upon a tubular arbor on
which the looper is mounted eccentrically.
Third. In placing the fulcrum of the feed lever on a level with the
work to be sewed, so as to cause the feed dog to come down square
upon the work.
Fourth. In suspending the feed dog from a pivot passing through
a projection from its side opposite to that from which projects the
roller arm which receives motion from the feed cam, thereby giving
to the working face of the feed dog such a situation in relation to the
pivot which forms its fulcrum, and to the working end of the roller
arm, that by the action of the feed dog on the work the roller stud
is pressed up against and held in contact with its cam.
Fifth. In the arrangement of a guage which will yield automatically
to the sinuosities of the work and yet be rigid at the time the needle
passes through the work.
Sixth. In the arrangement of a locking lever, which serves to retain
the guage and render the same rigid at the proper intervals.
Seventh. In the arrangement of set screw passing through the
locking lever and acting on the slide which carries the guage in such
a manner that the said guage can at all times be locked with the
required degree of tightness.
Eighth. In the arrangement of the surface guage against which the
work is pressed by the weight or spring acting to raise the table in
such a manner that the guage in its adjustments moves in a groove
in the frame so that it is prevented from lateral motions, its adjustments
on the frame with reference to the point of the needle and to the work
being accomplished by a set screw and an adjusting screw.

page_text: Ninth. In the arrangement of a barb coverer attached to a lever,
which is operated by a separate cam in connection with a spring attached
to the needle lever, and. with a stud projecting from the said needle
lever through a slot. in the head of the barb coverer, in such a manner
that when the needle enters the work the barb coverer rests against
the work, being pressed up by the spring on the needle lever, and when
the needle recedes the barb coverer remains stationary until the barb. is
covered, then the set screw in the needle lever carries the barb coverer
back nearly to the outer end of its stroke, when the barb coverer receives
an additional outward movement by its cam, and is caused to stay
while the needle comes back, and does not overtake the needle till it
is near entering the work, and till the old loop has ample time to slip
out of the barb and be carried by the feed motion out of the way of
the descending barb coverer.
Tenth. In providing an edge guage so constructed and arranged
as to serve as a welt guide, whereby the same mechanism is used for
sewing on welts to the insole and upper;" the edge guage for
"turned work" being removed and the other substituted for it.
"
Eleventh. In an edge guage so constructed and arranged that it
turns the inner or upper edge of the welt outwards from the "upper"
or work at the point where the stitching takes place, and causes it to
be presented at a right angle to the needle, or nearly so, the needle
then going squarely through it instead of going through it obliquely,
as it would do if the welt was not so bent up.
Twelfth. Also in combining with the edge guage a slotted projection
or loop which carries the welt and holds it up in the proper position
for delivery to the said edge guage, so that it cannot fall out of the
edge guage while the work is going on.
Thirteenth. Also in a last holder of peculiar construction and
arrangement whereby the heel and toe are raised and lowered or
presented at different levels, as the work proceeds, so as to be presented
properly to the needle, or to the needle and awl in machines where
both a needle and an awl are used. The last holder is pivoted on. its
under side forward of its centre to a base plate that is free to shde
on the table when impelled by the feedidog acting on the work,
such sliding taking place only when that part of the last holder on
which the feed dog is acting for the moment, has a solid bearing

page_text: on the base plate, but when it has not such solid bearing the feed
dog by its pressure tilts the last holder downwards against spring
slides arranged on the base plate, and which are brought into action
by the operator when he desires the shoe to tilt. The extent of the
tilting is regulated by means of adjusting screws. The last holder
is placed on a table that is forced upwards by means of a weight or
spring so that the work will be always pressed up against the surface
Quage.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Robert Lake in the Great Seal Patent
Office on the 14th December 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the "International Patent Office," No. 8, South-
ampton Buildings, London, Consulting Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourteenth day of June, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-second year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said William Robert Lake, Her
special licence that I, the said William Robert Lake, my executors,
administrators, and assigns, or such others as I, the said William Robert
Lake, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN MACHINES FOR SEWING BOOTS AND SHOES," upon the
condition (amongst others) that I, the said William Robert Lake,
my executors ar administrators, by an instrument in writing under
my, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be
filed in the Great Seal Patent Office within six calendar months next
and immediately after the date of the said Letters Patent..
NOW KNOW YE, that I, the said William Robert Lake, do hereby
declare the nature of the said Invention, and in what manner the same

page_text: is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the accompanying
Drawings forming a part of this Specification:-
This Invention relates to a sewing machine which is particularly.
intended for "turned work" so called, that is work where the uppers of
boots and shoes are sewed directly to their soles, the work being reversed
or turned inside out during the operation of sewing. The said machine
is also adapted for sewing on welts to insoles and uppers.
The said Invention consists, -
First. In securing the needle (which is curved) in an oscillating lever
of the third order, operated by a suitable cam in such a manner that the
power is applied to the needle lever, as close as possible to its free end,
whereby the requisite power is obtained to force the needle through
leather or other thick material, as herein-after set forth.
Second. In giving a reciprocating rotary motion to the looper by the
action of a rack and pinion, the said rack receiving its motion from a
cam and lever as herein-after set forth.
Third. In placing the fulcrum of the feed lever at or nearly at a
level with the work to be sewn, so as to cause the feed dog to come down
squarely upon the work.
Fourth. In suspending the feed dog from a pivot so arranged that it
hangs in such a position that both the roller which runs in contact with
the operating cam and the end of the lever which rests on the work.
are on the same side of a vertical line passing through the said pivot.
By this arrangement the working face of the feed dog is placed in such
a situation in relation to the pivot which forms its fulcrum, and to the
working end of the roller arm, that by the action of the said feed dog on
the work the roller stud is pressed up against and held in contact with
its cam.
Fifth. In the arrangement of a gauge which will yield to the sinu-
osities of the work and yet be rigid at the time the needle passes through
the work as herein-after set forth.
Sixth. In the arrangement of a locking lever which serves to retain
the said gauge and render the same rigid at the propor intervals, that
is, when the needle passes through the work, as herein-after set forth.
Seventh. In the arrangement of a set screw passing through the
locking lever and acting on a slide which acts on the gauge in such a

page_text: manner that the said gauge can at all times be locked with the required
degree of tightness.
Eighth. In the arrangement of a channel gauge against which the
work is pressed by a weight or spring acting on the work in such a
manner that the gauge in its adjustments moves in a groove in the
frame, so that any lateral motion thereof is prevented, its adjustment
on the frame with reference to the point of the needle and to the work
being accomplished by a set screw and an adjusting screw.
Ninth. In the peculiar arrangement of a barb coverer attached
to a lever, which is operated by a separate cam in connection with a
spring attached to the needle lever, and with a stud projecting from.
the said needle lever through a slot in the head of the barb coverer, in
such a manner that when the needle enters the work the barb coverer
rests against the work, being pressed up by the said stud on the needle
lever; when the needle recedes the barb coverer remains stationary
until the barb is covered; then the stud in the needle lever carries
the barb coverer back nearly to the outer end of its stroke; the barb
coverer then receives an additional outward movement from its cam and
is caused to stay while the needle comes back, and it does not overtake
the needle until it is about entering the work, and until the last formed
loop has ample time to slip out of the barb and clear of the way of the
descending barb coverer.
Tenth. In providing an edge gauge so constructed and arranged as
to serve as a welt guide, whereby the same mechanism is used for
sewing on welts to the insole and upper, the edge gauge for turned
work being removed and the other substituted for it.
Eleventh. In an edge gauge constructed and arranged so that it turns
the inner edge of the welt outward from the upper or work at the
point where the stitching takes place, and causes it to be presented at
a right angle or nearly so to the needle, the needle then passing through
it squarely instead of obliquely, as it would do if the welt were not
so bent up.
Twelfth. Also in combining with the said edge gauge a slotted pro-
jection or looped piece which carries the welt and holds it up in the
proper position for delivery to the said edge gauge, so that it cannot fall
out of the edge gauge while the work is going on.
Thirteenth. In a last holder of peculiar construction and arrangement
as herein-after set forth, whereby the ends of the work are raised and

page_text: lowered or presented at different levels as the sewing proceeds, so that
the work is presented properly to the needle or to the needle and awl
in machines where both a needle and an awl are used. The said last
holder is pivoted on its under side forward of its centre to a base plate,
which is free to slide on the table or other support whenever impelled
by the feed dog acting on the work, such sliding taking place only when
that part of the last holder on which the feed dog is acting for the
moment has a solid bearing on the base plate; when it has not such
solid bearing the feed dog by its pressure tilts the last holder downward
against spring slides arranged on the base plate, and which are brought
into action by the operator when be desires the shoe to tilt. The extent
of the tilting is regulated by means of adjusting screws. The last
holder is placed on a table which is forced upwards by means of a
weight or spring, so that the work will be always pressed up against
the surface of a channel gauge.
Having thus set forth the peculiar features of the said Invention, I
will now proceed more fully to describe the manner of carrying the same
into practice.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side elevation of my machine, and Figure 2 is a front
view of the same partly in section; Figures 3 and 4 are detached views
illustrative of the operation of the aforesaid edge gauge and parts con-
nected therewith; Figure 5 is a plan of the improved last holder;
Figure 6 is a section on the line X, X, Figure 5. Like letters indicate
the same parts throughout the Drawings.
A represents the frame which forms the bearing for the shaft B
whereon are mounted the cam discs C, C³, that impart motion to the
various parts of the said sewing mechanism. Through the upper part
of the frame extends a rod or spindle D, which forms the fulcrum for
two levers E, E', of the third order; in the loose end of the lever E is
secured the needle a, as clearly shewn in Figure 1. An oscillating
motion is imparted to the lever E by a cam groove in the disc C, and this
cam groove acts on a roller stud a' secured to the said lever between the
needle and the fulcrum D, so that the operative force is applied to the
said lever as close to the needle as possible, thereby applying in an
advantageous manner the power required to cause the needle to pass
through the leather or other thick material. The said lever works in a

page_text: с
guideway near its free end, and is thereby kept from swinging sufficiently
to disturb the correct operation of the mechanism. The thread is
delivered to the needle by the looper F, which is secured to the tubular
arbor c, to which a reciprocating revolving motion is imparted by the
action of the rack d and pinion e, the said rack being operated by a
lever es receiving the required reciprocating motion from a cam groove in
the disk c¹. By this reciprocating revolving motion of the looper the
thread is carried round the barb of the needle. The tubular arbor c is
exposed to the flame of a lamp or gas burner, so that the thread in
passing through the same becomes heated. The required feed motion is
imparted to the work by the feed dog G, which has its fulcrum on the
loose end of the feed lever H, and receives an oscillating motion by the
action of a cam on the side of the disc C. The feed lever H has its
fulcrum on a pivot f situated as herein-before specified at or nearly at
a level with the work, and it receives an oscillating motion from a cam
groove in the side of the disc C¹. By placing the fulcrum of the feed
lever on or near a level with the work it will be seen that the point of
the feed dog is brought down squarely or nearly so on the work, which
is not the case if the said fulcrum is situated higher or lower than the
level of the work. The connection between the feed dog and feed lever,
is effected by a pivot g projecting from the loose end of the feed lever,
and passing through an eye h formed on the edge of the feed dog
opposite the arm i, which carrics the roller j acting against a cam on the
disk C for the purpose of producing the required feed motion. By this
position of the eye h in relation to the point of the feed dog and
to the arm i the said arm is turned in towards its cam whenever the feed
dog strikes the work, and the feed motion is rendered sure and uniform
throughout the length of the stitch. When the said lever is not acting
on the work it is brought up to a screw stop by a spring. The said
¿¹
stop is adjustable and serves to regulate the length of the stitch. The
work is guided by the channel gauge I, and it is pressed up against this
gauge by the spring gauge J, which bears on the edge of the work, and
being made yielding as herein-before described it will follow the sinu-
osities thereof. This gauge serves to retain the work against the thrust
of the needle, and is locked just before the needle strikes the work by
means of the lever K operated by a cam on the disc C. This lever has
its fulcrum on a pivot J¹ and it actuates a slide which locks the gauge J.
In Figures 5 and 6 is the last holder which is pivotted to the base
plate m as herein-before described at n; o, p, are the slides which are

page_text: formed with the handles o', p', whereby they can be conveniently moved
in or out upon the base; q, r, s, are the adjusting screws.
Having now fully described the said Invention, as communicated to
me by my foreign correspondent, and the manner of conveniently and
advantageously carrying the same into practice, I claim the said Invention
consisting of the peculiar features herein-before described, substantially
as and for the purposes set forth.
In witness whereof, I, the said William Robert Lake, have here-
unto set my hand and seal, this Fourteenth day of December, in
the year of our Lord One thousand eight hundred and sixty-
nine.
WILLIAM ROBERT LAKE. (L.S.)
Witness,
H. J. GEDGE,
Clerk to Messrs. Haseltine, Lake, & Co.
8, Southampton Buildings,
London.