Machine Manufacturer
Year: 1896

page_text: Date of Application, 6th Mar., 1896
Complete Specification Left, 5th Dec., 1996-Accepted, 6th Mar., 1897
JOHN GREENWOOD and THOMAS GREENWOOD both of Barrow Street Oldfield
Road and Windsor Bridge, Salford Manchester in the County of Lancaster,
Weighing Machine Manufacturers, do hereby declare the nature of this invention
to be as follows:
We will describe our invention as applied to a portable weighing machine for
weighing coals, vegatables &c. in bags or skips.
The object of this invention is to prevent the continual wear and snipping of
hardened knife edges or centres and their bearings when not required for use, as is
the case that this class of machine is subject to, when either on waggon or cart.
In order to further this end, we propose as follows, the frame of the machine may
be made of wrought iron, malleable iron, or wood, in the centre of which we
provide a handle which rises & lowers the centre piece, and so liberates all the
centres from the bearings of the machine.
When the handle is pulled down and secured into a small catch at the bottom of
the front of the machine, it lifts the beam into position upon its bearings, in order
to ascertain the weight of the article or articles on the machine, when the said
handle is released from its position, it relieves the centres from the bearings, so
that there is no wear and tear of the centres while the machine is not in use.
We also put a back rail to these machines to be made to rise and fall according
to the height of the bag, so that one man can fill the bag himself, whilst it is being
held open by the hooks connected with the back rail.
Dated this 5th da of Manal 1900
JOHN GREENWOOD.
THOMAS GREENWOOD.
We JOHN GREENWOOD and THOMAS GREENWOOD of Barrow Street, Oldfield
Road Salford in the County of Lancaster, Weighing Machine Makers, do hereby
declare the nature of this invention and in what manner the same is to be
performed, to be particularly described aud ascertained in and by the following
statement:-
We will describe our invention as applied to a portable weighing machine for
weighing coals, vegatables &c. in bags or skips.
The object of this invention is to prevent the continuel wear and snipping of
hardened knife edges or centres and their bearings when not required for use, as is
the case that this class of machine is subject to when either on wagon or cart.
In order to further this end we propose as follows, the frame of the machine may
be made of wrought iron, malleable iron, or wood, in the centre of which we
provide an handle which raises and lowers the centre piece, and so liberates all the

page_text: centres from the bearings of the machine when the handle is pulled down and
secured into a small catch at the bottom of the front of the machine, it lifts the
beam into position upon its bearings in order to ascertain the weight of the article
or articles on the machine, when the said handle is released from its position, it
relieves the centres from the bearings, so that there is no wear and tear of the
centres while the machine is not in use.
We also put a back rail to these machines to be made to rise and fall according
to the height of the bag so that one man can fill the bag himself, whilst it is being
held by the hooks that are connected with the back.
In order that our invention may be more readily understood, we have illustrated
it in the accompanying sheet of drawings forming part of this specification wherein
Fig. 1 is a side elevation, Fig. 2 is a part end elevation, and part section, and
Fig. 3 is a plan of the machine.
The reference letters indicate like parts in the various figuers.
The frame a, may be made in one piece, the sides of which form a slide in the
centre, into which slides a cross piece 6 having steel bearings 6' recessed into the
top to receive the steel knife edges c.
The main beam d, may be made in one piece, the knife edges, or centres c c¹ being
secured in their respective places by means of nuts, the knife edges c¹ bearing into
the steel bearing e which are recessed into the brackets/f¹.
The bracket is secured to the underside of the platform g, on which the weights
are placed for the purpose of weighing, the bracket f' is secured to the underside
of the platform which has an adjustable back backrail J on which the goods to be
weighed may be placed.
On the underside of the brackets f and projections K are cast, which rest upon
the corners of the frame a wheu the machine is releived, thus the weight is taken
off the knife edges c c¹.
On the top of the frame a are cast projections at each side of the machine upon
which the main beam rests when the slide 6 is lowered.
In order to prevent the wear and snipping of the hardened steel knife edges
or centres and their bearings when not required for weighing, we provide the
means of simultaneously releiving the centres or bearings.
The said means consists of a shaft n, mounted in bearings in the side of the
frame a, on the end of shaft is keyed a handlever O, on the shaft is also screwed
2 levers P having rounded ends and bearing respectively at each side underneath
the cross piece b.
When the handlever O is pushed down the slide b is raised by the lever P and
the projection K lifted off the four corners of the frame a the main beam d being
simultaneously lifted from off the projection the handle is then placed underneath
the catch the machine is then in a position for weighing the goods.
To relieve the machine the hand lever O is raised allowing the projections K
to rest upon the frame a and the top part of the main beam d to rest upon the
projection cast on the frame, the centres or knife edges being thus lifted off
their respective bearings.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed we declare that what we
claim is.-
1. The raising and lowering of the central bearings in order to put the machine
in and out of gear as herein described.
2. The mode of construction of relieving motion operating substantially as and
for the purpose set forth.
Dated the Second of December 1896.
JOHN GREENWOOD.
THOMAS GREENWOOD.