Recent Mechanical Inventions

1879 Scientific American  
RECENT :MECHANICAL INVENTIONS. of beat is absorbed, and surrounding objects must supply it; Now for tbe effect upon our public sebools. Sucb a mao A maebine ror felting or hardening hat bodies, in which if the liquid is volatilized, or changed to a gaseous body, sUll frequently becomes tbe beaviest tax payer in tbe district. be opposite working faces of the apron and felting roll arc larger snpplies of beat arc demanded. Thus, if caustic am-Tbrougb tbe renters upon bis various farms be often
more » ... s farms be often con· IrovidllJ with rope ribs, has been patented by Mr. J. G. monia, which iu its natural condition is a gaseous or aeriform troIs votes enougb to turn tbe scale in the district election. rleeker, of Danbury, Conn. body, is subjected to powerful pressure it cbanges toa liquid, Now, be bas bimself and a colleague like unto bim electClI An improved fustener for window shutters and blinds, and in doing so is forced to give up a large amount of latent directors. Do you need to be told wbat sucb a board will vhieh will faoten itself when the hlind is swung open, and heat. If it is relieved of pressure it again becomes aeriform, doY Poor school-bouses-for wby sbould be care more for nay be readily unfastened without reaching out of the win-and as it demands a large amount of heat it seizes it from all ' I tbe scbool-bouse than for bis bomeY-no apparatus, sbort low, has been patented lIy Mr. N. P. }'. Hosenberg, of New bodies in contact. If water is in contact it is robbed of its terms of scbool; tbe cbeapest of cbeap teacbers-one wbo i ork city. latent beat and becomes frozen, and thus icc is formed. will work twenty-six days for a montb, "same as farm An improved rolling shade for greenLlOuses, consisting of In tbe arctic machine about fifty pounds of liquid am-bands "-become tbe rule. Or, if tbis man does not reach I number of slats hinged together, amI plaeed on the outside monia arc stored in a very strong iron cylinder, and this is tbe dignity of scbool director, be still bas a controlling in· If the greenhouse roof, so that it may be readily rolled up or connected with a coil of pipes immersed in a tank of strong I fluence in district affairs, and tbat influence is all in favor 01 ct d'lwn over the gl.ass by means of mechanism inside the brine; into this brine galvanized iron cans holding pure la penny-wise, pound-foolisb policy. lOu�e, has been patented hy Mr. Leon Lefebure, of Ncw water arc placed, and thesc cans arc of tbe size of tbe blocks I Tbe effect upon bis own children is no less disastrous. York city. of icc wbich arc formed. The liquid ammonia is allowed to 1 They do not attend scbool regularly, because tbey are kept Mr. Jonathan Lefller, of Meyerstown, Pa., has patented a flow througb these coils, and it gradually becomes gaseous, l out to work wbenever a possible five cents can be mad� lilt for securing the holts of railroad rails 01' parts of llIa-and in becoming so abstracts from tbe water 80 mucb beat thereby. Tbey are seldom supplied witb necessary books, :hinery, which, when applied, is locked and preventell from t.hat it speedily freezes. The Treauaen& o� NenraJcla. Aconite is an old remedy in neuralgia, which has. how ever, not altogether realized the expectations which were formed of its value. The power which it often lacks has been lately claimed for its alkaloid by ProfeB80rGubler, who announced that aconitia is almost infallible in trigeminal neuralgia. This substance was long banished from the materia medica for internal use, but it has been employed occasionally since the discovery of a crystallized form by Grehaul and Duquesnel in 1871. Its value in neuralgia has lately been investigated by the New York Committee on N eu rotics, of which Dr. E. C. Seguin is the chairman. Thedose of all forms of aconitia is about the same, the initial dose being about half a milligramme (rn grain) twice or thrice a day. Gubler states that the dose of amorphous aconitia may be gradually raised to half a centigramme, but Duquesllel's preparation has to be given with greater caution. There are, however, differences in susceptibility, and some persons can not bear a larger dose than rllf of a grain; while one case was met with in which n of a grain every three hours was tolerated. From a trial of the treatment in a series of cases, the com· mittee conclude that, on the average, distinct physiological and therapeutical effects may be obtained by giving Th of a grain three times a day. Of six cases of severe trigeminal neuralgia, one, probably a rellex neuralgia from a decayed tooth, was not at all benellted. Three cases of epileptiform neuralgia were slightly or only temporarily relieved. Two cases were cured. One of these had existed for seven years, with an interruption of seven months, procured by resection of the aJfected nerve. 'rhe results thus aJford a partial sup· port to M. Gubler's assertion. The value of ammoniacal sulphate of copper in the treat ment of the same affection has been asserted by M. Fereol in a recent communication to the Academie de Miidecine. He states that in cases in which every treatment has failed, even the administration of gelseminum and of aconitia, a cure or remarkable relief may be obtained to the most severe symp toms by tbis drug. Among the examples he gave of its use was the following: Trifacial neuralgia of two months' duration, with absolute (?) insomnia, was unrelieved by the extraction of teeth, quinine, bromide, aconitia, or tincture of gelsemi num, hypodermic injections of morphia, or arsenic. From the fi rst day of the administration of the ammonia sulphate of copper there was a notable remission in the symptoms and cessation of the insomnia. In one case the dose was pushed to eight grains without any other accident than nausea. It I:\as the drawback of occasioning a persistent metallic taste in the mouth. Only one case of intolerance was met with j in that a grain and a half of sulphate of copper occasioned violent vomiting.-Lancet. • I ••• Chlnelle Ph,.lIlelallll . According to the Nationat.M edicalRevie'UJ,when the Chinese pl!ysician examines the pulse, he places the arm of his patient on a cushion; then he applies the index, the middle and ring lIngers on the anterior face of the wrist in such a way that the index lInger may be nearest the arm, and the ring lInger nearest the hand. The phy sician then elevates and depresses each fi nger, alternately, with more or less force, like one playing on an organ. They examine, also, during a limited number of respirations, each of the nine pulses, which are formed, accord ing to their doctrine, on each hand, and they deduce from these their prognosis, at once, without hesitation; make their prescriptions, and attend to administering their medicines on the spot; receive the fee and retire, not to return unless again summoned. The Chinese physicians imagine a multi tude of odd connections between the viscera of the human body and the elements, the seasons of the year, the stars, colors, etc. The heart, they say, is analogous to lIre, to the planet Mars, to summer, to spring, and to southern climes. It comes from the liver,
doi:10.1038/scientificamerican06281879-405 fatcat:t7h6ryjlhrbl3g5mhjaeuywpiy