NEW SYMPATHETIC HINGES AND QUADRANTS FOR HOLDING DOORS, GATES, AND SHUTTERS, WITH NEW-INVENTED FASTENINGS FOR THE SAME
Year: 1785

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
STEDMAN, of the Parish of Saint Ann's, Soho, in the County of Middlesex,
Jeweller, send greeting.
WHEREAS His most Excellent Majesty King George the Third did, by
His Letters Patent under the Great Seal of Great Britain, bearing date the
Seventeenth day of November, in the twenty-sixth year of His reign, give and
grant unto me, the said John Stedman, His especial licence that I, the said
John Stedman, during the term of years therein expressed, should and law-
fully might use, exercise, and vend, within England, Wales, and the Town of
Berwick-upon-Tweed, my Invention of "NEW SYMPATHETIC HINGES AND
QUADRANTS FOR HOLDING DOORS, GATES, AND SHUTTERS, WITH NEW-INVENTED
FASTENINGS FOR THE SAME;" in which said Letters Patent there is contained
a proviso obliging me, the said John Stedman, under my hand and seal, to
particular description of the nature of my said Invention, and how
the same is to be performed, to be inrolled in His Majestic's High Court
of Chancery within one calendar month next and immediately after the date
of the said recited Letters Patent, as in and by the same, relation being
thereunto had, may more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
John Stedman, do hereby declare that my said Invention is described in the
above Plan and description thereof.

page_text: may.
open
with.
one or both
271
ay vy ope
and shutting either of the doors, the other partakes of the same motion in every respect and opens
my
Necessary
Mad
r
to take notice
and shuts at the same instant of time which is done by a communication of hinges over or under the doors... Figure the 1st This drawing shews the pr-iple of my Roller Sympathetic Hinge A. A are Rollers which are to be fixed horizontally on center pin hinges either over or
under the doors which is found most convenient to conceal the works the Rollers must be made thick enough to admit of the Chains B.B of bring fixed a supent distance apart at C.C. to prevent them touching or having the least friction at the intersection.. D the Diameter of the
Rollers to doors three feet in the clear should be about five or six inches und so in proportion as the doors or gaks are wider the square K.K. in the cent. of the rollers are to receive the square part of the center pin hiage Bin: Figure 7. E.E. are swivel seruvs to tighten
stacken the chuins as occasion requires when hunging the doors, when the doors or -gates are intended to be opened both ways it must be observed that the t 'ers must be put on the center pins so that the place where the Chains are,
: fixed C. C. be in a line with the doors as may
be seen in this figure but if the doors should be wanted to open but one way and to perform a semicircle within or without a room the Rollers must be fuc- the pins with the fastening C. C. to be at G. G. Supposing the doors shut and to open towards II but in this case it must
ir observed that the center pins must be fixed on the doirs as they usually are in such cases. Figure 2nd. This shows the front of my Rollers and Charts and what I mean by the Chains being fixed such a distance apart to prevent the possibility of any friction at the
intersection II in figure the first.. Figure 3rd. This is my lever Sympathetic Hinge it very much resembles the principle of my Rollers and 6 the description of one will give a hue idea of the other it is to be fixed horizontally on the pins the same as the Rollere
instead of Chains there are two bars of iron that intersect or cross one another as be seen by referring to the drawing BBBB. are -joints. - if these, inks were at D. D.D.D. the doors would not perform a quarter of a circle on account of the bars wanting length ... C. C.
are the Squares to receive the square part of the center pins one of these levers will perform the opening of the doors but not so well as with both. I ure 4th
one of these levers will perform the opening of the doors but not so well as with both. I ure 4th are two quadrants, these quadrants will open, and shut folding doors as well as Rollers and Levers but
the space wanting for them to act in makes it very inconvenient for many doors the quadranks T.T. must be the exact width of each door the figure.
doors the quadrants T. T. must be the exact width of each door the figure cus the position of the quadrants when the doors are shut of course when the doors are opened the vides of the
Quadrank XX will be in the place of O.O. M. M. show the squares to receive the Center pins. Figure 5. This shows a method whereby folding c-is may be made to open and shut something different from what I have already described .. A. A are wheels
with teeth, these wheels are to be fixed on the Centre pins horizontally the same as the Roilers B.B. is a bar of iron made the form as the figure cc=ubes with tuth at the ends uncoverable to the teeth of the whits this bur must be made tong enough to allow of
the opening of the doors C. C. are sockets or staples to study the bar when in action and keep it always in it place. Figure 6th This figure shews a fror - view of the Bar and wheels when fixed under the floor Figure 7th This is the Center pin hing. A.A.A.A. are
screws to fasten the the door the part of the pin at C is allowing for the thickness of the floor. B. is the square part on which are fixed the Rollers Lex: s Quadrants and the teethed wheels D is a point that turns in a socket which usually are made for common center pin
Hinges Figure 9. The works which constitute my new constructed Fastenings for doors that.
my hinges
ways are intended to be ixed in mortice cases the drawing shows the possition of the works when the doors are shut it is.
that the works contained in the Square of A must be on one door and the works in Square B must be on the other in fixing these cases in the docare must be taken that the works are opposite each other (as in the Drawing! otherways the works will not act properly
A. A. ure bolts one is thrown up at the same time that the other is thrown down by the action of Bolt B, on the two cranks or levers S. S. Bolt B. who the doors are opened projects about a quarter of an inch from the edge of the door and then the bolts A. A. are flush with
the top and bottom of the door when the doors are shut. Bolt B touches against bolt A in Square A as may be seen in the plate and finding no are unce forces up and down the bolts A. A. as I have described to open the doors the foller I must be turned and in turning
either way forces down bolt A when it is down as far that the square part-0 is oposite Bolt B in Square B the Bolt B. then enters into the Square part 0 of felt A in Square A and by that means the bolts A.A. are released from the Spring latch P in Figure II. E in Squaref.
A shews the place where the bolt to lock the doors should be placed, when locked the bolt E is intended to be thrown under the projection at I' in bolt within the case._ Bolt B. in order that it may release itself when the doors open from Square O of Bott A must-
be rounded a little at the point. Figure 8. The description of A in plate the 9th is a full explanation of the square A in this plate only with this fference a little projection at g. the intent of this projection is to receive the point of latch D in Square B. when the
foller B. in &quare B is turned it forces down latch D. which latch D when so pushed by acting on the projection ( in square A. forces down bolt A. c: the same manner as if foller I was turned in square A. by this method there may.
by turning either of them will release bolt A. and then of course the doors will open. Bolt B in, Square Backs the same as bolt B in figure 9. Figu: 10 is a fastening for folding doors that open but one way. A is a bolt that serves for a latch, it must be bevelled at the
top in order that it may enter in the Shiking plate (fixed over the door) when shutting the doors. B is another bolt that is thrown down in the floor tuning the key hole drop C in order to fasten the doors at the bottom when required the Spring should be made to
balance the bolt it must be observed that bolt B is fixed to Square B. and bolt A is fixed to Square A that is one bolt must be on one door and the other on the other. D. D. shews the conveniency of a knob on each door as I have described in plate the 8th. Es is a
stop bolt that is to be thrown under bolt A. and by that means will prevent Bolt A. from being thrown down by turning the knobs I's in &quare). A. &ws a place to fix the lock bolt, this lock bolt is intended to be thrown when locked under bolt A and over Bolt B forp
by that means it prevents bolt B from bring forced up by the key hole drop C. or the bolt At from being forced down by the Follers M. M. the end of the lock bolt ut g. must be made something like the drawing desorbis on purpose to admit of the action of the bolt. A and to
admit of the stop bolt. I to be turned under bott A if doors are not wanted to be locked the latch bolk may be used with the works belonging without the lock bolts agreeable to the fancy of the persons who wish to have my hinges and fastenings. Figure II. my Spring
latches that is to be fixed over or under the doors to receive the bolts A may be seen by referring to this plate it is to be observed that these latches are not intended to be used when the fastening described in figure the 10th is used, by my Sympathetic Hinges making the or
doors shut at the same instant of time it is reasonable to suppose that the bolts B. in square B by projecting a little must touch the bolt A in Square 1 before the doors are quite shut of course the moment it touches the bolts A gradually project from the top and bottom of
the door now if it were not for these spring latches to give way according to the rising of the botts A the doors would not shut. This plate shews "the position of the Spring latches when the doors are shut. Bolt A is seen between the live latches. Figure 12 shows the
position of the latches when the bolt A is rose a little and the doors nearly shut this position plainly demonstrates a dead stop there always we be let the doors be shut on either side this latch that is seen acting at present if the doors were to be shut the other
way would be inactive and serve as a dead stop
that latch which is seen inactive at present the latches must be made a little coular according to the sweep that Bolt A points out when the doors are shutting these latches must be fixed
crossways of the doors, Letters M are joints, IV. are springs 0 the top plate. – P. are latches that yield to the rising of the bolt A and when the bot: A is under Figure II and 12 incloses on both sides (as is sun in figure the 11th, and prevents the doors from being
opened till one of the knobs are turned, and Bolt A in Square A is forced down till opposite the Square place 0 in the raid Bolt in the 8th and 9th - gure. R are Pains that work in a hole in plate O with a knob at the point to shengthen the latches P when the
• fastenings of plate the 8th and 9th are put to doors that open but one way there is no occasion but for one of those latches P to each bolt I do s:t think it necessary to describe my inventions more, particularly
sant in hanging folding doors cannot be at a loss how to hang these with my aforesaid specification or a locksmith how to make.
confident that. -any person anyways conver-
my fastenings
e- but a middling hand at his Bowsiness. If doors are wanted to be thrown contary ways the Chains or Levers
must not be crossed and also if doors are wanted to be shut themselves spiral springs may be fixed to the Rollers which may very easy be done by fixing one end of the Spring to the Roller and the other and to the socket that receives the Center pin Hinge'
the same as
•
as am
be a knob
on
each door and
)