An Improved Open or Slotted Cheek or Shackle and Non-reversible Scale Beam for Weighing Purposes.
Year: 1894

page_text: Date of Application, 7th July, 1894
Complete Specification Left, 19th Oct., 1894-Accepted, 24th Nov., 1894
PROVISIONAL SPECIFICATION.
An Improved Open or Slotted Cheek or Shackle and Non-reversible
Scale Beam for Weighing Purposes.
I THOMAS CHESHIRE of Number 146 Dale Street Liverpool in the County of
Lancaster, Manufacturer of Weighing and Measuring Instruments do hereby
declare the nature of my said invention for an improved open or slotted cheek or
shackle and non-reversible scale beam for weighing purposes to be as follows:-
1. An improved cheek or shackle and non-reversible scale beam for weighing
purposes so constructed that the cheeks or shackles can be detached from the scale
beam and that the scale beam cannot be replaced in the reverse position in such
cheeks or shackles.
2. That such cheeks or shackles and scale beam are designed and constructed
of a form and dimensions which enables the beam to be easily and quickly detached
so as to free and relieve the knife edge centres and bearings from unnecessary
friction when not in use, and that when the scale-beam is replaced in the cheeks or
shackles it cannot be reversed so as in any way to affect its accuracy as a weighing
instrument.
3. The cheeks or shackles are made of metal of a C shape so that the knife edge
centres of the scale beam can be passed through the opening or slot and into
position on the bearings inside the C shaped cheek or shackle, and can also be
removed therefrom when desired.
4. The inside of one of the checks or shackles is grooved so as to allow a metal
pin which is fitted on one side of the scale-beam to travel therein without contact ;
and the inside of the opposite cheek or shackle is raised or thickened in such a
manner as to prevent the scale-beam from being placed in such cheeks or shackles
in the reverse way.
5. The cheeks or shackles and scale-beam are designed and made without loose
pins or other detached gear being required or used to set up or remove the scale-
beam into or from its bearings.
TL 1 £ T..1 1004
THOS. CHESHIRE,
Applicant.
COMPLETE SPECIFICATION.
An Improved Open or Slotted Cheek or Shackle and Non-reversible
Scale Beam for Weighing Purposes.
I THOMAS CHESHIRE of Number 146 Dale Street Liverpool in the County of
Lancaster Manufacturer of Weighing and Measuring Instruments 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:-
An improved cheek or shackle for scale beams for weighing purposes so
constructed as to be detachable from the scale beam and so that the knife edge
centres may be thereby easily and quickly relieved from friction when the weighing
instrument is not in use, and the sensitiveness of the scale beam as a weighing
instrument be preserved after it has been accurately adjusted; the cheeks or
shackles and scale-bean being at the same time so constructed and fitted as to be
non-reversible.

page_text: Fig. A on the sheet of drawings hereto annexed shews a side elevation of the
non-reversible scale beam or weighing instrument with the open or slotted cheeks or
shackles (but without the chains and pans being attached thereto). Nos. 1. 1. 1. 1. 1. 1.
are the open or slotted cheeks or shackles. Nos. 2. 2. 2. are the knife edge centres.
Nos. 3. 3. are the two ends or arms of the scale-beam. And Nos. 0. 0. 0. are the
openings or slots in the cheeks or shackles through which the ends of the knife-
edge centres are passed into or out of position as desired.
Fig. B on the sheet of drawings hereto annexed shews a transverse section
through the centre of the same scale beam or weighing instrument and the cheeks
or shackles. Nos. 1. 1. 1. 1. are cross sections of the open or slotted cheeks or
shackles. Nos. 2. 2. are the ends of the knife edge centres. No. 3 is a cross section
of the scale-beam. No. 4 is a metal pin projecting from one side of the scale
beam, and moving without contact along the groove Nos. 5. 5. in the cheek or
shackle. No. 6 is a metal plate or bar formed cast or placed vertically on the
inside of the opposite cheek or shackle.
Figs. C. D. E. F. and G on the sheet of drawings heref annexed shew a
cross-section, and side, and end elevations or views of portions of the same scale-
beam or weighing instrument drawn to a larger scale and the various parts of
which are numbered to correspond to the various parts and to similar numbers in
the smaller scale drawings Figs. A and B.
Fig. C is a cross section of the middle portion of the scale-beam with the centre
cheeks or shackles 1. 1. 1. 1. bearing the scale-beam 3.-shewing the position of
the groove 5. 5. the projecting metal pin 4.-and the vertical metal plate or bar 6.
And also shewing at 4 5 5 and 6 the alternative positions of the groove and
projecting metal pin, and the vertical metal plate or bar,-which may in the
alternative be all placed or fixed above the knife-edge centres 2. 2.
Fig. D is a side view of the same portion of the scale-beam with the centre
cheeks or shackles as shewn in cross-section in Fig. C.
Fig. E is a side view of one of the two ends or arms of the scale-beam and the
cheek or shackle to carry the scale pans.
Fig. F is an inside view of the cheek or shackle 1. 1. showing the position of
the groove 5. 5.-and the alternative position 5* 5-and the end of the pin 4 or 4*,
which projects from the scale-beam as before described.
The cheeks or shackles carrying the scale beam are made with any suitable
metal or material and an opening or cut or slot marked O. as shewn in Figs. A. D. E.
and F. is cut moulded or formed therein at a suitable angle and of a size so
adjusted as to admit of the ends of the knife-edge centres 2. 2. 2. passing easily and
quickly through and either into or out of such opening cut or slot O. O. O whenever
it is desired either to set up the weighing instrument for use or to remove the
scale beam from the cheeks or shackles and save any unnecessary friction of the
knife-edge centres and the bearings when the scale beam is not in use.
In Figs. B. and C. numbers 4. 4. is a metal pin projecting at right angles from
one side only of the scale-beam and so placed and fixed therein as to move without
contact along a groove 5. 5. formed on the inner side of the cheek or shackle on
the side of the scale beam from which the metal pin 4. 4. projects. Nos. 6. 6. is a
metal plate or bar cast raised or placed vertically on the inner side of the cheek
or shackle on the opposite side to the groove 5. 5. By the application and use of
this vertical plate to one side of the cheek or shackle, and the projecting metal
pin 4. 4. to the other side of the scale-beam, the scale-beam is rendered non-
reversible, and can only be placed in the cheeks or shackles in one way.
The open or slotted cheeks or shackles so formed or cut or slotted are made of
such proportionate shape or thickness as to compensate for the absence of any
metal or material which might otherwise have remained in the place of the opening
cut or slot and so that the open or slotted cheek or shackle is of equal strength to
the old form of circular cheek or shackle hitherto in general use.
The open or slotted cheek or shackle so constructed and formed as shewn is
formed and made so that no loose pins or fastenings of any kind are used or

page_text: required and no part of the apparatus is thus in any danger of becoming lost or
misplaced.
The form of the open or slotted cheek or shackle is simple effective and easily
adapted to any existing box-end or other scale-beam, and by its application thereto
ensures the accuracy and sensitiveness of the weighing instrument when once
adjusted for a much longer period than usual by allowing the knife-edge centres
and bearings of the scale-beam and cheeks or shackles to be entirely freed from
unnecessary friction when the weighing instrument is not in use.
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―
1st. The application of the open or slotted cheeks or shackles to scale-beams.
2nd. The application of the form of cheeks or shackles with grooves and plates
in connection with the metal pin in the scale beam in alternative positions as shewn,
so as to make the scale-beam non-reversible.
3rd. The application of the open or slotted cheeks or shackles to any scale beam
now in use and the adaptability of the non-reversible apparatus to any such
scale-beam.
4th. The method shewn of maintaining the accuracy of the scale-beam as a
weighing instrument, and of preserving the sensitiveness of the same when so
adjusted for a much longer period than usual.
5th. Generally the arrangement for easily and quickly setting up or removing
the various parts of the weighing instrument and preventing unnecessary friction
of the knife-edge centres, and bearings, and for preventing damage thereto when
not in use.
Dated this Eighteenth day of October 1894.
THOS. CHESHIRE,
Applicant.