Improvements in or relating to Blocking Machines for Making Bobbin Blanks.
Year: 1889

page_text: Date of Application, 23rd Feb., 1889
Complete Specification Left, 12th Nov., 1889-Accepted, 28th Dec., 1889
PROVISIONAL SPECIFICATION.
Improvements in or relating to Blocking Machines for Making
Bobbin Blanks.
I, THOMAS HARRISON BROCKLEBANK of Forge Mill, Caton, in the County of
Lancaster, bobbin manufacturer do hereby declare the nature of this invention to
be as follows:-
This invention relates to the blocking machines used chiefly in bobbin making
machinery. The present method of cutting out the blocks from which the hobbins
are made consists in the employment of a hollow circular saw up which the blocks are
forced as each succeeding one is cut from the slab, each block as it reaches an opening
at the top of the hollow saw flying out by the centrifugal force imparted to it.
The blocks as they fly are caught in a leather bag or blocking box which is quickly
worn through. By my invention I am able to obviate the violent expulsion of the
blocks and the consequent wearing out of the leather blocking bag and in carrying out
my invention I prefer to proceed as follows:-
The hollow saw is carried on the end or forms part of a hollow spindle driven by a
band or any suitable means which will not interfere with the upper end of the spindle.
As the blocks are cut they are forced in turn up this spindle and come out at the
open top; the result is that the axis of the bobbin block being concentric with the
axis of the hollow spindle and the block being delivered in line with the axis of
the spindle it has little or no centrifugal force imparted to it and simply topples over,
thereby obviating the violent striking of the leather bag or other receptacle into
which or upon which the blocks are delivered. The hollow spindle or saw can be made
of any convenient length.
Dated this 02nd day of Fab 1880
W. P. THOMPSON & BOULT,
A grants
COMPLETE SPECIFICATION.
Improvements in or relating to Blocking Machines for Making
Bobbin Blanks.
1, THOMAS HARRISON BROCKLEBANK of Forge Mill, Caton, in the County of
Lancaster, Bobbin 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 invention relates to the blocking machines used chiefly in bobbin making
machinery. The present method of cutting out the blocks from which the bobbins
are made consists in the employment of a hollow circular saw up which the blocks
are forced as each succeeding one is cut from the slab each block as it reaches
an opening at the top of the hollow saw flying out by the centrifugal force imparted
to it. The blocks as they fly are caught in a leather bag or blocking box which is
quickly worn through. By my invention I am able to obviate the violent expulsion
of the blocks and the consequent wearing out of the leather blocking bag and in
carrying out my invention I prefer to proceed as follows ;-
The hollow saw is screwed on to the end of a hollow spindle driven by a band or
any suitable means which will not interfere with the upper end of the spindle. As
the blocks are cut they are forced in turn up this spindle and come out at the open
top; the result is that the axis of the bobbin block being concentric with the axis
of the hollow spindle and the block being delivered in line with the axis of the spindle
it has ittle or no centrifugal force imparted to it and simply topples over, thereby

page_text: obviating the violent striking of the leather bag or other receptacle into which or
upon which the blocks are delivered. The hollow spindle can be made of any convenient
length.
In the accompanying drawings
Fig. 1 is an elevation of a blocking machine provided with my improvements the
dotted line ab indicating the part at which the said machine may be joined to another
similar machine in order to constitute a double machine; Fig. 2 is a vertical section
drawn to a larger scale of the hollow saw and spindle and driving mechanism thereof;
Fig. 3 is a vertical section of another hollow saw and the spindle adapted for
forming blocks smaller than would be formed by the apparatus as arranged in
figure 2.
Like letters indicate like parts throughout the drawings.
A is the machine framing, B the foot lever one end of which raises the drill C and
the other end pulls down the saw-carrying frame D and at the same time slackens the
leather or equivalent strap E so as to allow the jaw F under pressure of the weight Fl
to bear on the slab of wood from which the bobbin blocks are to be cut and grip the
said slab between that jaw and the stationary jaw F2 all these parts and their operations
being as in machines as hitherto constructed.
G is a hollow saw which at its upper end is provided with the screwed socket G¹.
H is the hollow spindle which is supported in the poppet head J after the manner of a
lathe spindle and to which is keyed or otherwise secured the driving pulley J¹, the
poppet head being arranged in the ordinary manner so that it may be raised and
lowered by means of the before mentioned foot lever B. The bore of the hollow
spindle H tapers slightly towards its lower end that is to say it is larger at its upper
than at its lower end where exteriorly it is provided with a screw thread corresponding
to that formed in the socket G¹.
The mechanism constructed in the manner so far described provided for the cutting
out of bobbin blocks of a maximum size to form which the saw G is screwed on to
the lower end of the spindle H and the machine is then operated in the well-known
manner the blocks as they are cut passing successively up through the saw G and
spindle H over the top edge of which they may be allowed to topple into any desired
receptacle; there being little or no centrifugal force to drive them outwards the
bobbins will not require any special construction of receptacle to catch them.
For enabling the same machine to be used for forming smaller sized bobbin blocks
and to enable these to be discharged from the upper end of the hollow spindle H
without the existence of any appreciable centrifugal force to throw them outwards from
the spindle I proceed as follows;-
I insert into the hollow spindle H a tubular lining K figure 3 the exterior surface
of which is slightly tapered to conform with the tapered bore of the spindle H the
interior bore of the lining being cylindrical and approximately of the saine size as the
saw to be used, which saw is screwed on to the lower end of the spindle as shown in
figure 3.
The machine may then be used in the same manner as that before described.
It will be seen that a considerable number of different sized bobbin blocks may thus
be sawn out by the same machinery if provided with my improvements.
The saw G instead of being screwed to the hollow spindle H as herein before
described may be fitted to it in any other desired manner.
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 blocking machine the combination with the saw G of a hollow spindle such
as H on which it is co-axially carried substantially as and for the purpose herein
described.
2. In a blocking machine the combination with the saw G carried co-axially on a
hollow spindle of internal diameter larger than the saw of a tubular lining fitting
into the hollow spindle substantially as and for the purpose herein described.

page_text: 3. In a blocking machine a hollow spindle such as H upon which the saw G is
co-axially carried and from the open upper end of which the bobbin blocks are delivered
substantially as described and illustrated in the accompanying drawings.
4. In a blocking machine preventing the flying about of the bobbin blocks by
causing them to leave the revolving mechanism in a direction co-axial with the saw.
D
T
T. H. BROCKLEBANK.
W. P. Thompson & Boult,
Agents for the Applicant.