. Scientific American Volume 97 Number 16 (October 1907) . g stag-gered or placed so that the lines of quickestdescent do not coincide in the adjacent series. SPONGE-HOLDER.—U. L. Rife, SoundBeach, Conn. The device is for use in hold-ing sponges, cloths, or other articles, withwhich it is desired to wash or wipe windowsor other objects not readily reached by thehand, and the object of the inventor is to pro-vide a device easy to manipulate and capableof gripping articles as tightly as desired, andfrom which they may be instantly removedwhen desired. supporting the block to be shaped, the model


. Scientific American Volume 97 Number 16 (October 1907) . g stag-gered or placed so that the lines of quickestdescent do not coincide in the adjacent series. SPONGE-HOLDER.—U. L. Rife, SoundBeach, Conn. The device is for use in hold-ing sponges, cloths, or other articles, withwhich it is desired to wash or wipe windowsor other objects not readily reached by thehand, and the object of the inventor is to pro-vide a device easy to manipulate and capableof gripping articles as tightly as desired, andfrom which they may be instantly removedwhen desired. supporting the block to be shaped, the modelblock being separated upon the lower place the decks in such position as to oc-cupy comparatively small floor space. It re-lates more particularly to a machine of a typeparticularly suitable for duplicating blocks,brims, or curls upon which hats are formedand finished. Note.—Copies of any of these patents willbe furnished by Munn & Co. for ten cents state the name of the patentee, title ofthe Invention, and date of this and Queries:. HINTS TO CORRESPONDENTS. Names and Address must accompany all letters orno attention will be paid thereto. This is forour information and not for publication. References to former articles or answers should givedate of paper and page or number of question. Inquiries not answered in reasonable time should berepeated; correspondents will bear in mind thatsome answers require not a little research, and,though we endeavor to reply to all either byletter or in this department, each must takebis turn. Buyers wishing to purchase any article not adver-tised in our columns will be furnished withaddresses of houses manufacturing or carryingthe same. Special Written Information on matters of personalrather than general interest cannof be expectedwthout remuneration. Scientific American Supplements referred to may behad at the office. Price 10 cents each. Books referred to promptly supplied on receipt ofprice. Minerals sent for


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