IMPROVEMENTS IN ADJUSTABLE SELF-SUPPORTING POLES SUITABLE FOR LAWN TENNIS AND OTHER PURPOSES WHERE A STRONG TENSION IS REQUIRED to
Year: 1884

page_text: I JOSEPH SAMUEL PINDER of 21 The Pavement Lordship Lane Dulwich in
the County of Surrey, Lawn Tennis Outfitter &o do hereby declare the nature
of my Invention for IMPROVEMENTS IN ADJUSTABLE SELF-SUPPORTING POLES
SUITABLE FOR LAWN TENNIS AND OTHER PURPOSES WHERE A STRONG TENSION
IS REQUIRED to be as follows:-
My invention relates, in the first place, to that description of poles known as
adjustable, and consists of two castings or forgings, (hereinafter called bases), bolted-
on to the bottom of the pole by bolts running horizontally through the iron work,
or bases, and pole;-This said iron work, or base, is, on the front side, constructed
with two projecting wings, running diagonally from the centre of the pole, one in a
direction to the right the other to the left, and resting on the front bar of an iron
ground frame hereinafter described.-The other half, or back part, of the base is
constructed with a groove across same so as to engage with a swivel loop, attached
by a pivot to the back bar of the iron ground frame.
The ground frame is formed of bar iron, twisted into a square or oblong shape,
with two legs turned downwards at each back corner.
The said iron is twisted at the top of each leg to edgeways and at each front
corner is twisted back so that the front bar lies flat on the ground.
The bar running edgeways at the back part of the frame from the top of one
leg to the other, has in the centre a swivel loop, fastened by means of a pivot :-
this loop, when the frame is not in use, can be pressed down on either side so as to
lie below the level of the ground frame-and consequently all lies below the surface
of the ground.
I can also make the back and front bases in one piece, or combined, and dispense
with the horizontal bolts, and fasten the pole to the base by means of screwing or
other wise fixing the pole into the combined base, a boss being provided for the
purpose.
GEO. DOWNING,
Agent for the Applicant.

page_text: I JOSEPH SAMUEL PINDER of 21 The Pavement Lordship Lane Dulwich in the
County of Surrey, Lawn Tennis Outfitter &. do hereby declare the nature of my
Invention for "IMPROVEMENTS IN ADJUSTABLE SELF-SUPPORTING POLES SUITABLE
FOR LAWN TENNIS AND OTHER PURPOSES WHERE A STRONG TENSION IS REQUIRED,"
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:—
My invention relates in the first place to that description of poles known as
adjustable poles and consists of two castings or forgings or of one casting or forging
to each pole herein after called "bases," bolted to the bottoin ends of the poles by
bolts running horizontally through the bases and pole. The bases are constructed
with two projecting wings or brackets, which rest upon the front bar of an iron
ground frame herein after described, and another (shorter) bracket on the opposite
side of the base which latter bracket has a notch or groove, into which a swivel
loop fits, such loop being attached by a pivot to the back bar of the iron ground
frame.
The ground frame is constructed of bar, angle, or T iron, twisted or bent into a
square or oblong form, with the two ends or legs turned downwards, and so
arranged that the front bar lies flat on the ground. The bar which runs across the
back part of the frame from the top of one leg to the other carries the central loop
herein before referred to, being attached thereto by means of pivot or rivet.
When the frame is not in use this loop can be. revolved on the pivot and pressed
below the level of the ground so as not to become an obstruction.
And in order that my said invention may be clearly understood; reference is
hereby made to the accompanying drawings, in which similar letters of reference
indicate corresponding parts:
i
Fig. 1 is a perspective elevation shewing one pole, a portion of a net; and the
necessary appliances connected therewith.
Fig. 2 is a separate enlarged perspective view of the lower portion of the pole
with the base attached thereto.
Fig. 3 is an enlarged perspective view of the ground frame.
a is the pole. the base; which may be made in two parts and fixed as shewn
and herein before described; or may be made in one forging or casting and so
fixed. b¹¹are the inner brackets which rest upon the frame c; 62 is the outer
bracket which has a notch or groove bs into which the loop or shackle el fits, when
in use, aš shewn in Fig. 1. d are the two legs of the frame which enter the
ground and secure the stability of the frame; rendering it a firm foundation for the
pole.
e is a lever attached to the pole for tightening the rope f. A short chain à is
fitted to which the adjustable slide is secured by the hook h. The arrangement
shewn may also be fitted to the base instead of the pole. And in this case the
leverage is obtained by an iron frame pivotted from each side of the wings or inner
brackets b¹ b' and extending backwards on either side of the pole, to which the
rope is attached and at a still further back ward point, a toothed arm extending
downward from the pole engages with the lever c. This method can be worked by
the foot instead of the hand.
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. The manufacture and use of ground frames as foundations for supporting
moveable bases attached to adjustable Lawn Tennis and other poles, substantially
as described and shewn on the drawings Figs. 1 and 3.

page_text: 2. The manufacture and use of "bases" for adjustable Lawn Tennis and other
poles whether formed in one or two portions, for the purposes and substantially as
described and shewn on the drawings Figs. 1 and 2.
3. The several and respective parts, and the combination of the same, together
forming my improvements in adjustable self-supporting poles suitable for Lawn
Tennis and other purposes where a strong tension is required, as herein before
described and shewn on the drawings, or any mere modification thereof.
Dated this 1st day of March 1884.
GEO. DOWNING,
Agent for Applicant.