An Improved Iron Clamp for Tightening Belts and Bands:
Year: 1891

page_text: Date of Application, 21st Feb., 1891
Complete Specification Left, 12th Nov., 1891--Accepted, 12th Dec., 1891
PROVISIONAL SPECIFICATION.
An Improved Iron Clamp for Tightening Belts and Bands:
I WILLIAM STEVENSON DOUGALL Junior Engineer Radcliffe-on-Trent Notts
do hereby declare the nature of this invention to be as follows:-
The clamp is composed of two clips which are formed by the parts-C. C and D. D,
the carriages C. C, are grooved on the footplate, this also applies to the foot of
part D. to give a more secure grip to the belt, the clips are connected by two
screws E, E which have fixed on one end a bevelled wheel F, F, in gear with
these wheels, are two others which are fixed on the shaft S, this is turned by means
of the movable handle H, which can be fixed on either end of the shaft according
to which is most convenient.
Fig. 2 shews the part C with part D opened, to allow the end of the belt being
put in. When the ends of the belt are placed on the footplates of C. C. & parts D. D
allowed to fall upon them, the belt is immediately gripped by turning the handle H,
when the belt is sufficiently tight, the cuds are fastened together the part D can
then be removed to allow the clamp being taken away.
הדי
1001
An Improved Iron Clamp for Tightening Belts and Bands.
I WILLIAM STEVENSON DOUGALL Junr. Engineer Radcliffe-on-Trent Notts
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, reference being made to the drawings filed with my Provisional
Specification :--
The clamp is composed of two clips formed by the parts C, C and D. D. the top
part D which is in the form of a hinge is grooved on the bottom to give a more
secure grip to the belt (I find that the footplate C need not be grooved) a slot is
also cut in one end to allow of removal. These clips are connected by two
screws E. E, one clip is made to traverse along the screws the other is beld
stationary by means of collars, on this stationary end a bevelled wheel is fixed to
each screw, in gear with these wheels are two others fixed on a shaft S, this shaft
is turned by means of a movable handle H which can be fixed on either end of the
shaft according to which is most convenient.
Fig. 2 shews the clip with part D opened to allow the end of the belt being
inserted, when the ends of the belt are placed on the footplates of CC and the
parts D D allowed to fall upon them the belt is immediately gripped and can be
tightened by simply turning the handle H when the belt is sufficiently tight
reverse the handle, the part D can then be removed to allow the clamp being taken
away.
I propose to make the castings of malleable iron which I consider most suitable,
in different sizes to suit the width of belts.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is.
1. A belt can be tightened in one quarter the time taken by the ordinary
method.
2. There is no possibility of the belt slipping during process of tightening.
3. A perfectly even pull is obtained both screws being turned with one motion.
Dated this 11th day of November 1891.
W. S. DOUGALL, Junior.