Improvements in the Detachable Jointing of the Frames or Metal Parts of Cycles or other Vehicles
Year: 1897

page_text: Date of Application, 29th Nov., 1897
Complete Specification Left, 29th Sept., 1898-Accepted, 29th Oct., 1898
PROVISIONAL SPECIFICATION.
Improvements in the Detachable Jointing of the Frames or Metal
Parts of Cycles or other Vehicles,
I, CHRISTOPHER HARCOURT SHACKLOCK, of The Ashes, Wolverhampton, in the
County of Stafford, Cycle Works Manager, do hereby declare the nature of this
invention to be as follows:-
The improvement consists substantially in the use of an internal metal band or
bush placed within a tube or article requiring expansion. The band or bush is
thickened at the overlapping edges preferably as shewn at Fig. 1, of the accom-
panying drawings & rolled or formed to the shape desired the expansion is caused
by the forcing together of the prepared overlapping edges of the band or bush by
means of a screw or other instrument but the faces or edges may be made in
divers ways as for instance either circular or triangular and a wedge pulled or
pushed down between them by means of a screw or other instrument thus causing
expansion.
Having thus stated the nature of my invention I will proceed to more particu-
larly describe the same in reference to the accompanying drawings.
Fig. 1 Is the bush before being placed in the tube requiring expansion.
Fig. 2 Is the tube ready slotted and drilled for expansion.
Fig. 3 Is a section shewing metal band or bush A not expanded lying inside
tube B already slotted for expansion. D is the screw by means of which the two
overlapping edges are forced together thus causing expansion.
Fig. 4 Shews band or bush A expanding tube B into loop tube or other article
marked C already bored or fitted to receive tube B causing a firm & substantial
joint to be effected yet detachable by the removal of pin D.
Dated this 27th day of November 1897.
Improvements in the Detachable Jointing of the Frames or Metal
Parts of Cycles or other Vehicles.
I, CHRISTOPHER HARCOURT SHACKLOCK, of The Ashes, Wolverhampton, in the
County of Stafford, Cycle Works Manager, do hereby declare the nature of this
Q3-1

page_text: 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 improvements in the detachable jointing of the frames
or metal parts of cycles or other vehicles, and has for its object to construct an
efficient and rigid joint.
According to this invention the end of the tube which is to be attached to a lug
is split longitudinally in one or more places, and has inserted within it a spring
bush of approximately cylindrical form split longitudinally along one side and with
the edges thickened and slightly overlapping. These thickened edges are so
shaped that by drawing one outwardly by means of a screw it will be forced against
an inclined face on the other edge, so as to cause the bush to expand within the
tube and so expand the latter within the lug.
In the accompanying drawings,
Figure 1 is a perspective view of the spring bush;
Figure 2 is a transverse section of the joint, before it is expanded;
Figure 3 is a similar view showing the joint in the expanded state.
Figure 4 is a transverse section of a modification.
Like letters indicate like parts throughout the drawings.
A spring bush A of approximately cylindrical form is divided down one side
longitudinally and provided with thickened edges AA which slightly overlap.
The edge A has an inclined face A³, the edge A2 having a screw-threaded hole A
bored in it.
The end of the tube B to be inserted in the lug C is split as at B¹ and has a
hole bored in it as also has the lug C. to allow of the passage of a screw bolt D,
whose end enters the screw-threaded hole A in the spring bush A. A washer E
on the bolt D provides a flat surface against which the latter may be screwed up.
In making the joint the parts are assembled, and the bolt I passed through the
Jug and tube and screwed into the edge A of the spring bush A. On tightening
the bolt, a rounded portion A5 on the edge A³ of the bush is brought against the
inclined face A3 of the edge A in such a manner that the bush is expanded within
the end of the tube, which is also expanded so as to form a tight joint with
the lug C.
In the construction illustrated in Figure 4 both edges of the bush A are formed
as the edge A having inclined faces A³, a separate block F being arranged between
the edges of the bush so that the latter may be expanded by drawing down the
block F by the screw D.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. In a detachable joint for the frames of cycles or other vehicles the combination
with a split tube and a lug of a spring bush such as A which can be expanded
substantially as described within the tube.
2. In a detachable joint a spring bush such as A substantially as described and
illustrated in Figure 1 or Figure 4 of the accompanying drawings.
3. The complete detachable joint for the frames of eveles or other vehicles sub-
stantially as described and illustrated in Figures 2 and 3 or Figure 4 of the
accompanying drawings.
Dated this 27th day of September 1898.
C. H. SHACKLOCK.
Boult & Wade,
Agents for the Applicant.