Improvements in Portable Weighing Machines.
Year: 1894

page_text: Date of Application, 21st Mar., 1894-Accepted. 11th Aug., 1894
COMPLETE SPECIFICATION.
Improvements in Portable Weighing Machines.
I WILLIAM HENRY WEST of 41 and 43 Elm Hill Norwich Scale Beam
Weighing Machine and Weight 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 :-
This machine is denominated "The Hawkers Machine" and is a portable light
strong lever weighing machine with standard weights 2 lbs. imperial standard
answering for one cwt. as shewn by the denomination on G. S. P. Fig. 1 so that
both the machine and each weight may bear the Government stamp and suitable
for carrying upon carts waggons, trucks and general use in streets yards bins
stores etc.
This machine is invented to meet a long standing requirement of "The City of
Norwich Bye Laws relating to the Sale of Coal 1891" Clause 4 namely:
:-"The
person in charge of every vehicle carrying or bearing coal in any quantity for sale or
delivery on sale shall carry therewith a verified and stamped weighing instrument
of a form approved by the local authority together with stamped weights for use
with such weighing instrument if necessary for the use thereof.'
"
4 & 5. are sections of the weights.
6. is a side section of the machine.
"
"
7. is an end view of the weight scale.
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8 & 9. are plans of the weights.
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10. is an end section of the machine.
It consists of an iron box frame F (Fig. 1, 2, 3, 6 10) with solid handles H (cast
on) (Fig. 1, 2, 3, 10) covered with a goods scale plate G. S. P (Fig 1, 3, 6, 10)
protecting the enclosed working parts from weather and soil and a sliding lid S L
(Fig. 1, 2, 3, 6) over weight box secured by studs A (Fig. 1, 2, 3, 6). The weight
box W B is partitioned off from the main part containing the levers and the like
for the reception of the weights not in use. The smaller parts of this machine are
of malleable iron to prevent breakages. In the centre of the square section of frame F
are two cheeks C¹ (Fig. 2, 6, 10) with steel bearings S B¹ upon which the main
lever M L (Fig. 1, 2, 3, 6, 7, 10) is fulcrumed upon knife edged steel centres S C¹.
This main lever is connected with two lower levers B (Fig. 2, 6, 10) by a steel
pin S C2 with knife edges and steeled loops L' upon which rest the steel pins S C³
(Fig. 2, 6, 10) in the central ends of the levers B. At the extreme ends of levers B
extended to each corner of square section of frame F are steel pins S C which rest
their knife edges upon steeled loops L' suspended from brackets D in corners of
frame which brackets may be either 4 (that is, one at each corner) or 2 at the
outside end of the frame and in place of the other two brackets and loops 2
stationary cheeks C with steel bearings S. B². The main lever extends from the
steel centres S C₁ through an aperture in the frame and over the weight box.
Upon the upper side is a flanged index over which moves a runner R (Fig. 1, 2, 3, 6,)
indicating up to 7 lb. weight. Between the Figures 2 & 3 on the index is a plug
to receive the Government stamp when the machine is verified by an inspector of
weights and measures. At the extreme end of this lever is a transverse bar T

page_text: (Fig. 2, 7) with pendant ends in which are knife edged steel pins S C upon which
is suspended a weight scale W S (Fig. 7, 2,) on steel bearings S B³ which are thus
protected from the weather by the transverse covering. The shaft of this weight
scale is reduced at the top J (Fig. 7) to admit of the lock-slot I in the weights
(Fig. 8, 9) passing to the central hole W in the weights thereby permitting the
weights to drop down the shaft upon the scale plate M. P at the bottom thereby
securing the weights from loss should they be left upon the scale during transit
upon cart or van and the like. The plate G. S. P. is supported upon 4 uprights
with brackets C³ (Fig. 6, 10) with steel bearings S B₁ (Fig. 6) resting upon knife
edged steel pins S. C which receive all the weight of the articles being weighed
and which causes the weight scale W. S. to ascend upon which weights are placed
to the required amounts from 7 lbs. to 1 cwt. the smaller weights being indicated
and ascertained by the runner R on the numbered index being placed so as to allow
the arm M L to rise slowly. The sliding weight R (Fig. 1, 2, 3, 6) is constructed
with a light hole S H with steel pointer dropping into slot showing the correct
position on the index while in use. The loose weights (Fig. 4, 5, 8, 9,) are made
with lead plugs E upon which the Government stamp is to be placed. From the
steel pin S. C (Fig. 2, 6, 1,) the main lever is extended and furnished with a slot
through which a bolt passes and upon and by which is secured the balance
weight B. W. The whole is made secure by the tension rod T. R. with screw and
nut (Fig. 2, 3, 6, 10,) passing through the frame F and two staples K upon the
G. S. P (Fig. 6, 10,).
This machine :-
Is an instrument in accordance with the statutes of the realm.
Is recognized by the Board of Trade.
Supplies a necessity in the requirements of the City of Norwich and County of
Norfolk Bye Laws relating to the Sale of Coal which no other instrument does.
Can be removed by one man from one place to another being both small, light,
and compact.
The total height of this machine is under 7 inches.
"
"
width
length
"
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Average weight
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14
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21
84 lbs.
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Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
:-
1. That the weights can be used upon any of these machines being all of the
same relative standard weight or even upon ordinary scales.
2. That the reduced shaft to the weight scale and lock slot in the weights
supplies a great need and are applicable to any ordinary weighing instrument for
weighing goods in transit from one place to another.
3. That the covered weight box is a most useful and necessary addition to scales
used for outdoor purposes being more easy of access than the ordinary shaft and
thumb-screw and cannot be lost.
4. That the centres being made of the best cast steel hardened they will stand
the wear and tear which is required of them.
Dated this 15th day of March 1894.
TENA
WILLIAM R.
MR. WED.
EST.