Improvements in Weighing Apparatus
Year: 1894

page_text: Improvements in Weighing Apparatus, ..
I JOHN MORELAND, of 43 Cooper Street in the City and County of Nottingham
Mechanist, do hereby declare the nature of this invention to be as follows:-
..
11
This invention relates to. weighing apparatus of the lever or steelyard type in
which a graduated lever or arm is attached to, or forms a part with, a head carrying
knife edges or their equivalents to which are connected suspension and scale pan
links, and has for its object to provide an accurate and efficient weighing apparatus
capable of ready adjustment for the purpose of balancing the weight of the scale
pan or other receptacle and of the apparatus generally and also for eliminating
the tare, if any, in the final reading so as to leave the arm and counterpoise
free to indicate the net weight of goods only, and thereby simplify weighing
operations.
:
In one form of apparatus constructed according to this invention a head,
comprising a hollow rectangular or other shaped box closed by a suitable cover
plate, has secured in it transverse knife edges on which are mounted the ends of
suspension and scale pan links which pass through suitable apertures in the said
head and thereby prevent tampering with the enclosed knife edges. In one end of
the said hollow head is a weight mounted on a screw capable of being operated, by
means of a suitable key from the outside, to slide the said weight towards or from
the fulcrum in order to adjust the equilibrium of the apparatus previous to a
weighing operation. On the opposite end of the head is a socket into which a
graduated arm is inserted and detachably secured by a cotter or other suitable
fixing device. The said arm is preferably of square cross section and graduated.
on its various faces according to different systems of weight units so that by turning
the arm in its socket into an appropriate position the weight may be read off at the
counterpoise in the desired system of units.
In order that the final reading on the index arm may represent the net weight
only, the outer end of the said arm is bored out for a suitable part of its length,
and in the hole so formed is inserted a slidable rod, with or without a weighted end
and graduated according to any desired system or systems of weight units, so that
by setting this rod to the proper division representing the amount of tare that
amount is by this means weighed separately and thereby eliminated from the gross
weight, the final weight read off at the counterpoise being the net weight of the
goods, as will be readily understood.
Dated this 20th day of October 1894.
Improvements in weighing
1 JOHN MORELAND, of 43 Cooper Street, in the City and County of Nottingham,
Mechanist, 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 :-
This invention relates to weighing apparatus of the lever or steelyard type in

page_text: which a graduated lever or arm is attached to or forms a part with a head carrying
knife edges or their equivalents to which are connected suspension and scale pan
links and has for its object to provide an accurate and efficient weighing apparatus
capable of ready adjustment for the purpose of balancing the weight of the scale
pan or other receptacle and of the apparatus generally and also for eliminating
the tare, if any, in the final reading so as to leave the arm and counterpoise
free to indicate the net weight of goods only and thereby simplify weighing
operations.
Referring to the accompanying drawings:
Fig. 1 is a sectional elevation of a weighing apparatus constructed according to
this invention.
Fig. 2 is a vertical section at A-A Fig. 1.
Fig. 3 is a horizontal section of the same at B-B.Fig. 1 and
Fig. 4 section of the end of the weighing arm showing the telescopic auxilliary.
arrangement for weighing small additional weights such as the tare.
A bollow head a divided into compartments b, c by the partition d and closed by
a dovetailed cover e has secured in its sides transverse knife edges f g on which are
mounted the suspension and scale pan links h, i which pass through suitable
apertures in the said head, tampering with the enclosed knife edges being thereby
prevented.
In the compartment c of the head a is a weight mounted on a screw m which on
being rotated by means of a suitable key from the outside causes the said weight
to approach towards or recede from the fulcrum knife edge f and thereby adjust.
the equilibrium of the apparatus previous to a weighing operation.
In a socket n the turned end o of a graduated arm is inserted and detachably
secured by a pin so as to be capable of rotating freely about its axis. The said
arm p is of square cross section and graduated on its various faces according to
different systems of weight units so that by turning the arm in the socket n into an
appropriate position the weight may be read off at the counterpoise q in the desired
system of units. The counterpoise q is mounted axially on the arm p and bevelled
at one end to faces r in order to facilitate the reading of the division lines on the
arm P.
In order that the final readings on the index arm p may represent the net weights
only and to enable small weights to be read with accuracy the outer end of the
arm is bored out for a suitable part of its length and in the holes so formed is
inserted a slidable red t preferably with faces coinciding with those of the arm p
and graduated according to corresponding or other units so that by setting the said.
rod to the proper division representing the amount of tare that amount is weighed
separately and thereby eliminated from the gross weight, the final weight read.off
at the counterpoise 9 being the net weight of the goods as will be readily under-
stood. It will be evident that by placing the counterpoise g at zero the rod may
be used alone for weighing light bodies.
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 lever or steelyard weighing apparatus, a hollow head closed by a cover
and enclosing the knife edges and shackle ends, substantially as described.
2. The combination with the hollow head of a lever or steelyard weighing
apparatus, of a counterbalancing weight mounted on an adjusting screw, substan-
tially as described and for the purpose set forth.
3. The combination with the rotatable graduated arm p of a bevelled counter-
poise o mounted axially thereon, substantially as described.
4. The combination with the arm p of a weighing apparatus, of a second
graduated arm t sliding telescopically therein, substantially as described and for the
purpose set forth.
5. The combination of parts constituting my improvements in weighing

page_text: apparatus the whole arranged, constructed and operating substantially as described
in the foregoing Specification and illustrated in the drawings hereuuto annexed.
Dated this 20th day of September 1895.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.