IMPROVEMENTS IN APPARATUS FOR ELONGATING AND CONTRACTING WAIST AND OTHER BELTS WHICH APPARATUS IS ALSO APPLICABLE POR OTHER PURPOSES." PROVISIONAL SPECIFICATION
Year: 1865

page_text: LETTERS PATENT to George Frederick White, of Hornsey, in the County
of Middlesex, Gentleman, and Harvey Chamberlain, of Falcon Square,
in the City of London, Agent, for the Invention of "IMPROVEMENTS IN
APPARATUS FOR ELONGATING AND CONTRACTING WAIST AND OTHER BELTS
WHICH APPARATUS IS ALSO APPLICABLE POR OTHER PURPOSES."
PROVISIONAL SPECIFICATION left by the said George Frederick White
and Harvey Chamberlain at the Office of the Commissioners of Patents,
with his Petition, on the 29th August 1865.
We, GEORGE FREDERICK WHITE, of Hornsey, in the County of Middlesex,
Gentleman, and HARVEY CHAMBERLAIN, of Falcon Square, in the City of
London, Agent, do hereby declare the nature of the said Invention for "IMPROVE
MENTS IN APPARATUS FOR ELONGATING AND CONTRACTING WAIST AND OTHER BELTS
WHICH APPARATUS IS ALSO APPLICABLE FOR OTHER PURPOSES," to be as follows:-
The apparatus of our Invention consists of a disc or circular plate of metal
or other material having one or more volute grooves, such plate being mounted
on a central pin on which it, rotates. This pin may either be on one end of
the parts to be drawn close or thrust asunder, or it may be on an independent
piece, and the grooved disc arranged to operate on, and intermediate of the
two parts to be drawn together or thrust asunder for elongating or contracting
purposes. The volute grooves receive a pin of the part to be contracted or
drawn closer by the disc. By rotating this disc in one direction or the other,
[Price 8d.

page_text: the required expansion or contraction will be effected. By employing two
volute grooves in a disc whose axis is mounted on a piece intermediate of the
two parts it is desired to separate (elongate) or contract, twice the extent
and rate of motion will be attained.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Frederick White and Harvey Chamberlain in the
* Great Seal Patent Office on the 28th February 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME. we, GEORGE
FREDERICK WHITE, of Hornsey, in the County of Middlesex, Gentleman, and
HARVEY CHAMBERLAIN, of Falcon Square, in the City of London. Agent, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-ninth day of August, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-ninth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto use, the
said George Frederick White and Harvey Chamberlain. Her special licence
that we, the said George Frederick White and Harvey Chamberlain, our
executors, administrators, and assigns, or such other as we, the said George
Frederick White and Harvey Chamberlain, our 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 APPARATUS FOR ELONGATING AND CONTRACTING WAIST AND
OTHER BELTS, WHICH APPARATUS IS ALSO APPLICABLE FOR OTHER PURPOSES," upon
the condition (amongst others) that we, the said George Frederick White and
Harvey Chamberlain, our exccutors or administrators, by an instrument in
writing under our, 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 we, the said George Frederick White and Harvey
Chamberlain, do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and ascer-

page_text: tained in and by the following statement, reference being had to the sheet of
Drawings hereunto annexed, and to the letters and Figures marked thereon,
(that is to say):-
The apparatus of our Invention consists of a disc or circular plate of metal
or other material having one or more volute grooves, such plates being mounted
on a central pin on which it rotates. This pin may either be on one end of
the parts to be drawn closer or thrust asunder, or it may be on an independent
piece, and the grooved disc arranged to operate on and intermediate of the
two parts to be drawn together or thrust asunder for elongating or con-
tracting purposes. The volute groove receives a pin of the part to be
contracted or drawn closer by the disc. By rotating this disc in one direction
or the other the required expansion or contraction will be effected.
employing two volute grooves in the disc whose axis is mounted on a piece
intermediate of the two parts it is desired to separate (elongate) or contract,
the extent and rate of the motion will be multiplied twofold.
DESCRIPTION OF DRAWINGS.
By
Figs. 1 and 2 represent our Invention applied as a book clasp, Fig. 1
showing a face view of the clasp and the opening edge of the book, while
Fig. 2. represents an end view of the same. The small Figures represent
the several parts of the clasp detached, all indicated by the letters of reference.
a, b, are the parts of the clasp affixed to the book covers, which are the same
as in ordinary; to part b is hinged plate c, while on plate c is superposed the
disc d having the volute groove or slot e. The plate is placed under the
plate c, and the three parts c. d, and f, are secured to each other by socket
pins g and h, which receive and have female screws corresponding respectively
with the screwed pins with heads g¹, h¹. The pin h forms the axis on which
the disc d rotates, and is inserted from underneath the plate f, passing through
slot i, through hole in plate c, and through the hole. 1 in disc d, and is
secured in place by the screw pin h¹ screwed in from above. It will be
observed that the neck of pin h is square to fit the slot 1, and rounded for
the remainder of its length to fit the holes k and 1. In like manner pin g.
is passed from underneath through plate f. then plate c, and through disc d,
but passing through the groove e therein; the squared neck of the pin is longer
than that of h, as seen, it is inserted through the square hole m in f, and
through the slot p, in which it traverses in c, while the round part occupies
the thickness of the disc d in the volute e, it is fixed in position by the screwed
pin h. By this combination. the parts c, d, and f, are firmly secured to each
other while the parts c and may slide one on the other to an extent nearly

page_text: equal to the length of the slots i and p, and the combined plates c and f
lengthened or shortened to that extent. This lengthening or shortening is
readily effected by rotating the disc d on its axis, the slot e taking effect on
the pin g, causing it to traverse in the slot p, while the pin h is also free
to traverse in slot i. Instead of the pins g, h, g¹, h¹, as described, simple
rivets may be used. The part of the clasp has a hole q, which is passed
over the knob r on part a to clasp the book in the usual manner, or this
connecting part may be a hook, or otherwise arranged. By the applications of
the parts according to this Invention to book clasps they can be made tighter or
looser as may be desired, or after clasping they may be tightened or slackened
before unclasping. A similar application of this Invention may be made to
glove fastenings for the purpose of lengthening or shortening the connection
or fastenings. The parts will of course be very much smaller and less expen-
sively put together, and will be provided with a hook or button for effecting
the attachment of the one part of the glove to the other, the elongating parts
according to this Invention being simply introduced for varying the length of
such connection. It is equally applicable to waist belts, tabs, and waist fasten-
ings of waistcoats and trowsers, and also surgical bandages and other like
purposes, and more especially to driving belts, which we have illustrated in the
Figures 3, 4, 5, 6, 7, and 8 of the Drawings, and like this example, the other
herein-above enumerated may be made double acting instead of single as in
the former illustration, that is to say, with two volute grooves instead of one,
and operating simultaneously.
Fig. 3 represents a face view of the driving belt connection; Fig. 4, an
edge view of the same; while Figs. 5, 6, 7, and 8. represent all the parts
detached except the disc, which is sufficiently indicated in Figs. 3 and 4; s, t,
are the ends of the belt or strap to be united; these are riveted to two pieces
of metal s, t, which are hinged to two pieces u, v, of metal, dovetailed and
sliding in the body piece w, seen separately in plan at Fig. 5, longitudinal
section at Fig. 6, and in end view at Fig. 7. In the body a pin x is
fixed, on which the disc y is is placed and rotates as a centre. The parts w and
are furnished with pins i, j, which are received in the double volute or
snail grooves or slots o, o, of disc y. The pins i, j, and x, are furnished with
screws and nuts as seen to keep the several parts in place. We mill or
roughen the periphery of the disc y to afford grip to turn it. It will be obvious
that by turning the disc in one direction, the parts u and
separate from each other by the traverse of the pins i, j, in the volute
grooves, and that by turning it in the opposite direction these pieces u and
will be constrained to approach each other, and so cause the endless band
will be caused to

page_text: and driving strap in which such is interposed to be lengthened or shortened, and
so tightened or loosened as may be required.
A third illustration represented in Fig. 9, a plan, and Fig. 10, an edge view,
shows the Invention applied to lengthening and shortening. bars, connecting
rods, and other like purposes.
A, A, is a dovetailed bed or junction piece into which are fitted to slide the
two ends of the parts to be connected, B, B. The cross section of A would
be the same as represented at Fig. 7. On parts A, and B, B, is superposed the
disc C, mounted on the central stud pin D, on which it is to be rotated; like
the last arrangement this has two volute grooves receiving pins E, E, fixed in
parts B, B. By rotating the disc C, the parts B, B, will be caused to ap-
proach or recede from each other, and thereby lengthen or shorten the extent
of the two parts B, B, as may be desired. The metal disc C, like the last
described, is milled on the edge to afford the necessary grip, or it may be six,
eight, or more sided, and a spanner applied for the purpose of turning it.
Greater or less pressure may be applied on the disc by the nuts of pins D and
E, E, either to fix it in position when it has been adjusted or to generate the
necessary friction to prevent its rotation when not required. In all cases the
friction or other obstruction to the rotation of the disc should be such that the
force or tension applied to the rod, belt, or other article to which the apparatus
is applied shall not be overcome, and so as to cause the rotation of the disc.
Having described the nature of our Invention, and the manner of perform-
ing the same, we declare that what we claim as our Invention to be protected
by the herein-before in part recited Letters Patent is, the apparatus herein
described and represented in the Drawings hereunto annexed, applied to the
elongation or contraction of waist belts, driving bands, and other articles in
the manner and as herein-before described.
In witness whereof, I, the said George Frederick White, for myself and
on behalf of the said Harvey Chamberlain, have hereunto set my
hand and seal, this Twenty-eighth day of February, in the year of our
Lord One thousand eight hundred and sixty-six.
Witness,
W, CLARK,
Patent Agent,
53, Chancery Lane, London.
GEO. F. WHITE. (L.S.)