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History Of The The Arts And Sciences For 1797.
and tendo achilles , or by the want of power in those muscles whose office it is to correct them . Fourthly . In the incurvation of the spine . J ANUARY 31 st . Letters patent were granted to Messrs . Rolfe and Barrow , of Cheapside , for their newly invented piano fortes . The principle of this invention consists in the substitution of a
vibratory substance in the body of the insrrument , in the room of the usual sounding board . That which has been found to answer the best is an ox ' s hide , prepared as vellum , and preserved from accidents by spirit , varnish , and camphor . On this vibratory substance pedals and hammers act from beneath , so as to produce the full effect of the double drum accompaniment .
The instrument , with \ hese improvements , possesses evidently great advantages over the common ones , as well in variety as in sweetness and richness of tone . FEBRUARY 7 th . Letters patent were granted to John Falconer , of Atlee , in the parish of Wandsworth , Surry , for a new method of cooling and condensing spirits in the process " of distillation .
Mr . Falconer has contrived to introduce a vessel into his wormtub , to which he has given the name of a refrigerator , from which proceeds another worm to receive the spirit , before it goes to the cistern . This additional worm , which is introduced into the middle of the common one , is made of several coils , square or circular , at pleasure ; and having a greater length of coil , the spirit becomes the sooner condensed , before it arrives at the discharging cock .
ON the same day , like letters were granted to John Groves , of Chesham , in ' the county of Bucks , for an improvement in the constructing and fixing of coppers , 'boilers , furnaces , & c . and likewise for a method of lessening the consumption of fuel . The objects of this improvement are to introduce less fuel , and to divide it more equally in the act of ebullition . The first of these purposes is effected by confining the fire under the within a smaller and
copper compass ; the last by a tube , which receives the flame from the fire below , and which passes through the side of the copper . After the flame has produced a complete revolution within the body of the copper , it evaporates by means of a flue . FEBRUARY 23 d . Letters patent were granted to George Hodson , of the city of Chester , for an improved method of separating the
mineral . or fossil alkali from the muriatic acid , as it exists in common salt . FEBRUARY 28 th . Letters patent were granted to Thomas Oxenham , of Oxford-street , press-maker , for the invention of a new mangle which is worked by a common lever . It occupies one third of the usualltaken tip b lesand has weiht of stones
space y y mang , no g like them . The linen to * be worked on , is put round a horizontal cylinder , and by the power of the lever ( which a child may manage ) it is pressed . against another cylinder , so as fully to produce the desired effect . jTxo BE COltIINL-ED . 1
Note: This text has been automatically extracted via Optical Character Recognition (OCR) software.
History Of The The Arts And Sciences For 1797.
and tendo achilles , or by the want of power in those muscles whose office it is to correct them . Fourthly . In the incurvation of the spine . J ANUARY 31 st . Letters patent were granted to Messrs . Rolfe and Barrow , of Cheapside , for their newly invented piano fortes . The principle of this invention consists in the substitution of a
vibratory substance in the body of the insrrument , in the room of the usual sounding board . That which has been found to answer the best is an ox ' s hide , prepared as vellum , and preserved from accidents by spirit , varnish , and camphor . On this vibratory substance pedals and hammers act from beneath , so as to produce the full effect of the double drum accompaniment .
The instrument , with \ hese improvements , possesses evidently great advantages over the common ones , as well in variety as in sweetness and richness of tone . FEBRUARY 7 th . Letters patent were granted to John Falconer , of Atlee , in the parish of Wandsworth , Surry , for a new method of cooling and condensing spirits in the process " of distillation .
Mr . Falconer has contrived to introduce a vessel into his wormtub , to which he has given the name of a refrigerator , from which proceeds another worm to receive the spirit , before it goes to the cistern . This additional worm , which is introduced into the middle of the common one , is made of several coils , square or circular , at pleasure ; and having a greater length of coil , the spirit becomes the sooner condensed , before it arrives at the discharging cock .
ON the same day , like letters were granted to John Groves , of Chesham , in ' the county of Bucks , for an improvement in the constructing and fixing of coppers , 'boilers , furnaces , & c . and likewise for a method of lessening the consumption of fuel . The objects of this improvement are to introduce less fuel , and to divide it more equally in the act of ebullition . The first of these purposes is effected by confining the fire under the within a smaller and
copper compass ; the last by a tube , which receives the flame from the fire below , and which passes through the side of the copper . After the flame has produced a complete revolution within the body of the copper , it evaporates by means of a flue . FEBRUARY 23 d . Letters patent were granted to George Hodson , of the city of Chester , for an improved method of separating the
mineral . or fossil alkali from the muriatic acid , as it exists in common salt . FEBRUARY 28 th . Letters patent were granted to Thomas Oxenham , of Oxford-street , press-maker , for the invention of a new mangle which is worked by a common lever . It occupies one third of the usualltaken tip b lesand has weiht of stones
space y y mang , no g like them . The linen to * be worked on , is put round a horizontal cylinder , and by the power of the lever ( which a child may manage ) it is pressed . against another cylinder , so as fully to produce the desired effect . jTxo BE COltIINL-ED . 1