Improvements in Apparatus for Bending Tubes.
Year: 1896

page_text: Date of Application, 21st Nov., 1896
Complete Specification Left, 23rd Aug., 1897-Accepted, 2nd Oct., 1897
Improvements in Apparatus for Bending Tubes.
We WILLIAM EDWIN GREGG, of 65 Poplar Street, Smethwick, Staffordshire, Sinith,
and ERNEST GREGG, of 39 Cape Hill, Smethwick, Staffordshire, Cycle Fitter, do hereby
declare the nature of this invention to be as follows:-
This invention relates to improvements in apparatus for bending tubes, and more
particularly intended for the bending of cycle tubes.
In combination with a radial block of the ordinary type, or of a similar construction
in which a peripherical semicircular groove is made equal to half the sectional size of
the tube to be bent. At the axis of this block is provided a suitable pin or pins or
side projections with which the bending lever hereinafter described may be engaged
or be secured.
It is more particularly relating to this lever that this our invention is concerned,
and consists in the use of an adjustable roller as hereinafter described. This lever is
of a fork-like shape to embrace each side of the said block, and its ends may have
holes through which the axial pin may connect it to the block, or it may have hook
like ends to engage with axial projections. Within this lever is further provided a
grooved roller whose groove coincides with the groove in the block. This roller hus
end bearings (passing through slots in the sides of the lever and) upon which rest
the two sides of a bridge piece, and from the body of the lever are two screw pins
whose forward ends impinge upon the said bridge piece so that the roller may be
adjusted up to and against the block when the tube is placed between them, or be
withdrawn when required. This means of adjustment may be modified, as for
instance, the pins may be placed in side lugs upon the lever, or a central pin may be
used, or the adjustment may be made from the front of the lever.
By these means when the tube to be bent is placed between the block and the lever,
and the roller set tightly against it, then by pulling around the lever, the tube is
bent without the usual creases, which occur in methods at present in use.
Dated this 20th day of November 1896.
CHARLES T. POWELL,
Applicants' Agent.
Improvements in Apparatus for Bending Tubes.
We WILLIAM EDWIN GREGG, of 65 Poplar Street, Smethwick, Staffordshire, Smith,
and ERNEST GREGG, of 39 Cape Hill, Smethwick, Staffordshire, Cycle Fitter, 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 improvements in apparatus for bending tubes and more
particularly intended for the bending of cycle tubes,

page_text: In order to more clearly explain this our invention we have appended hereunto an
illustrative drawing upon which are figures and numbers of reference, sirailar numbers
referring throughout the several views to the same thing or part, and in which :-
Fig. 1, is a side elevation, and Fig. 2 a front elevation, and Fig. 3, a sectional plan
view on line A-B (Fig. 1) of this our invention.
5, is a radial block of the ordinary type (or of a similar construction) in which a
peripherical semi-circular groove 6, is made, equal to about half the sectional size of
the tube 7, which is to be bent. At the axis of this block is provided a suitable pin
or pins or side projections 8, with which the bending lever 9, hereinafter described
may be engaged or be secured.
It is more particularly relating to this lever 9, that this our invention is concerned,
and consists in the use of an adjustable roller as hereinafter described.
This lever is of a fork-like shape to embrace each side of the said block 5, and its
ends may have boles through which an axial pin may connect it to the block, or it
may have hook like ends as shown, to engage with axial projections 8. Within this
lever is further provided a grooved roller 10, whose groove 11, coincides with the
groove 6, in the block 5. This roller has end bearings 12, passing through slota 13,
in the sides of the lever and upon which further rest the two sides 14 of a bridgo
piece 15, and in the body of the lever are placed two screw set pins 10, whose forward
ends impinge upon the said bridge piece 15, so that the roller may be adjusted
firmly towards the block 5, when the tube is placed between them, or be withdrawn
when required. The precise details of adjusting the bridge piece 15, or its equivalent
may be variously modified without departure from the nature of this our invention.
By these means when the tube to be bent is placed between the block and the lever
and the roller set tightly against it, then by pulling around the lever in the direction
of the arrow 17, the tube is bent without the usual creases which occur in the
methods at present in use.
Having now particularly described and ascertained the nature of this our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. In apparatus for bending tubes, the combination with a block 5, and roller 10,
of the lever 9, having adjusting screw or screws 16, and adjustable bearings 14, all
substantially as set forth and shown.
2. In apparatus for bending tubes the combination with a block 5, and lever 9,
of the adjustable roller 10, having a tightening adjustineut upon the tube 7, all
substantially as set forth and shown.
Dated this 21st day of August 1807.
CHARLES T. POWELL,
12 Cherry Street, Birmingham, Applicants' Agent.